Physics : asked on sahrsalim70

14.04.2022

How can I determine the height of the building?

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06.02.2023, solved by verified expert

Nitin Arora

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Mathematics, English, Physics. Research Scholar at Indian Institute of Technology, Roorkee

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Answer:

166.96 feet

Step-by-step explanation:

How can I determine the height of the building?, №15256680, 14.04.2022 23:23

Given that ∠BCA = 63° and ∠BDA = 49°

Also, DC = 60ft

Let the height AB = h feet and BC = x feet

In △ABC

tan63° = AB/BC = h/x

x = h / tan63° ...........................................................(1)

In △ADC

tan49° = AB / (DC + BC) = h / (60 + x)

60 + x = h/tan49° ..................................................(2)

From (1) and (2)

60 + h/tan63° = h/tan49°

60 = h(1/tan49° - 1/tan63°)

solving further

60 = h(tan63° - tan49°)/(tan49°*tan63°)

h = 60*tan49°*tan63° / (tan63° - tan49°) = 60*1.15*1.96 / (1.96 - 1.15) = 135.24/0.81 = 166.96 feet

Thus, the height of the building = 166.96 feet

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Mathematics

QUICK WILL GIVE 100 POINTS !! The last remaining of the Seven Wonders of the ancient world, the great pyramids of Giza are perhaps the most famous and discussed structures in history. Many questions remain about the construction of these massive monuments, and theories abound as to the actual methods used. Using your knowledge about the shape of the Pyramids of Giza to answer the following questions. To attain maximum credit please include any websites used for references. Your reflection should include complete sentences and at least 4 paragraphs.

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P Answered by PhD

(1) Square; triangle or pentagon

(2) Originally 146.6 m, now 139 m

(3) (a) h = 150 m; (b) l = 240 m; (c) base = square;

(d) lateral area = 92 205 m²; (e) slope = 5/4

Step-by-step explanation:

(1) Base

The pyramids at Giza have square bases. Those are the most common, but the bases can have any number of shapes, e.g., triangles or pentagons.

(2) Size

The Great Pyramid was originally 146.6 m tall with a base that was 230.4 m on each side. It is now only 139 m tall, because the limestone casings have fallen away.

It would be possible to build a bigger pyramid today, because modern machinery can easily handle the massive stones.

(3) A larger pyramid

A larger modern pyramid might be 150 m tall and have a square base 240 m on each side.

(a) Height = 150 m

(b) Length = 240 m

(d) Surface Area

The square pyramid has four triangular faces.

(i) Side height

We can use Pythagoras' Theorem to calculate the side height s of the pyramid:

s² = 120² + 150² = 36 900 m²

s = √36900 = 192.1 m

(ii) Lateral area

The pyramid has four triangular faces.

Each triangle has a base of 240 m and a height of 192.1 m.

The formula for the area of a triangle is

A = ½bh

So. the area of the four triangles is

A = 4 × ½bh = 2bh = 2 × 240 m × 192.1 m = 92 205 m²

(e) Slope of pyramid

slope = Δy/Δx = 150/120 = 5/4

QUICK WILL GIVE 100 POINTS !! The last remaining of the Seven Wonders of the ancient world, the grea

Mathematics

Step-by-step answer

P Answered by PhD

(1) Square; triangle or pentagon

(2) Originally 146.6 m, now 139 m

(3) (a) h = 150 m; (b) l = 240 m; (c) base = square;

(d) lateral area = 92 205 m²; (e) slope = 5/4

Step-by-step explanation:

(1) Base

The pyramids at Giza have square bases. Those are the most common, but the bases can have any number of shapes, e.g., triangles or pentagons.

(2) Size

The Great Pyramid was originally 146.6 m tall with a base that was 230.4 m on each side. It is now only 139 m tall, because the limestone casings have fallen away.

It would be possible to build a bigger pyramid today, because modern machinery can easily handle the massive stones.

(3) A larger pyramid

A larger modern pyramid might be 150 m tall and have a square base 240 m on each side.

(a) Height = 150 m

(b) Length = 240 m

(d) Surface Area

The square pyramid has four triangular faces.

(i) Side height

We can use Pythagoras' Theorem to calculate the side height s of the pyramid:

s² = 120² + 150² = 36 900 m²

s = √36900 = 192.1 m

(ii) Lateral area

The pyramid has four triangular faces.

Each triangle has a base of 240 m and a height of 192.1 m.

The formula for the area of a triangle is

A = ½bh

So. the area of the four triangles is

A = 4 × ½bh = 2bh = 2 × 240 m × 192.1 m = 92 205 m²

(e) Slope of pyramid

slope = Δy/Δx = 150/120 = 5/4

French

Drawing from the following building blocks, string together at least five sentences. each sentence should include at least two elements from the building blocks. of course, you should feel free to use more than one of any element, so, for example, you could say: deux flèches blanches , even though only flèche blanche is included in the chart.

Step-by-step answer

P Answered by PhD

Bonjour !!!

From left to right

1st line

une flèche blanche pointant vers la droite

une flèche noire pointant vers la droite

un rond noir entre deux lignes droites verticales parallèles.

un rond noir entre les deux lignes obliques.

2nd line

un rond noir au-dessus de la ligne droite horizontale.

un rond noir en-dessous de la ligne droite horizontale.

une flèche noire pointant vers la droite.

3rd line

une flèche noire pointant vers la gauche.

une flèche noire pointant vers le haut

une flèche noire pointant vers le bas

hope this helps ☺☺☺

if it's correct may I have a brainliest plizzz!!

French

Step-by-step answer

P Answered by PhD

Bonjour !!!

From left to right

1st line

une flèche blanche pointant vers la droite

une flèche noire pointant vers la droite

un rond noir entre deux lignes droites verticales parallèles.

un rond noir entre les deux lignes obliques.

2nd line

un rond noir au-dessus de la ligne droite horizontale.

un rond noir en-dessous de la ligne droite horizontale.

une flèche noire pointant vers la droite.

3rd line

une flèche noire pointant vers la gauche.

une flèche noire pointant vers le haut

une flèche noire pointant vers le bas

hope this helps ☺☺☺

if it's correct may I have a brainliest plizzz!!

History

Pls Imagine that the city of Athens has decided to build a new museum to share and celebrate Greece’s past. You have been hired to create an exhibit for the new museum, celebrating the Ancient Greece Civilization. Assignment: Your museum exhibit must highlight six Ancient Greek Artifacts—one for each of the six S.P.R.I.T.E. categories. Each of the artifacts must include an image or sketch of the artifact. Your exhibit must also include a written explanation of why each artifact should be included in the museum and how the artifact was important

Step-by-step answer

P Answered by Master

Bruh no one is going to answer this, its a project.

Explanation:

Thanks for the free points ;)

English

1.what s the term for the manner in which an author considers a topic? a. structure b. revision c. content d. point of view 2. which word choice below demonstrates the greatest sense of determination? a. the united states hoped for freedom and liberty around the world. b. the united states considered freedom and liberty around the world. c. the united states was skeptical of freedom and liberty around the world. d. the united states took a stand for freedom and liberty around the world. 3. if readers truly comprehend a text, they re able to effectively

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P Answered by PhD

Please refer to the attachment for the explanation and answers to your questions.
1.what's the term for the manner in which an author considers a topic? a. structure b. revision

1.what's the term for the manner in which an author considers a topic? a. structure b. revision

English

100 POINTS Conduct research and collect five possible sources on one of the following topics. You may narrow your topic if you like, so long as your area of focus relates to one of the provided subjects. slavery in the 1800s women s rights in the 1800s crossing the Atlantic in the 1800s shipbuilding in the 1800s Provide a bibliographic citation for each source. Two sources may be websites, and at least three sources should be books, journal articles, or magazine articles, either print or digital format. Keep in mind, that while Wikipedia is often

Step-by-step answer

P Answered by Master

How bad was slavery in the 1800s and what type of people were slaves?

Work Cited Page

“Pre-Civil War African-American Slavery : National Expansion and Reform, 1815 - 1880 : U.S. History Primary Source Timeline : Classroom Materials at the Library of Congress : Library of Congress.” The Library of Congress, www.loc.gov/classroom-materials/united-states-history-primary-source-timeline/national-expansion-and-reform-1815-1880/pre-civil-war-african-american-slavery/.

The National Archives. “Slavery.” The National Archives, The National Archives, 5 Nov. 2020, www.nationalarchives.gov.uk/education/resources/slavery/.

“Slavery in America.” Slavery in America - Timeline - Jim Crow Museum - Ferris State University, www.ferris.edu/htmls/news/jimcrow/timeline/slavery.htm.

“Slavery in North America 1654-June 19, 1865?” Slavery in North America 1654-June 19, 1865?, MLK - Wesleyan University, www.wesleyan.edu/mlk/posters/slavery_northamaerica.html.

“Brazil: Five Centuries of Change.” Brazil Five Centuries of Change, library.brown.edu/create/fivecenturiesofchange/chapters/chapter-2/african-slavery/.

Hope this helps!

Chemistry

Rain forest decomposers break down plant matter before it has a chance to build up. what do you think the difference is in temperate forests that allow layers of leaf litter to accumulate? your answer should include at least two complete sentences.

Step-by-step answer

P Answered by PhD

The soil is more developed and more fertile.

Explanation:

The lack of immediate decomposers in temperate forests allows the vertical profile of the soil to develop more thanks to the accumulation of plant matter. As a result, the soils of temperate forests are eroded less easily by the element and they also tend to be more fertile than rain forest soils due to the slow decomposition of organic matter.

English

Step-by-step answer

P Answered by PhD

Please refer to the attachment for the explanation and answers to your questions.
1.what's the term for the manner in which an author considers a topic? a. structure b. revision

English

Those tests were constructed around items like fill-in-the-blank sentence completion, such as “even though tom was mary thought he was ” and the correct answer always seemed to be the most bland combinations of thoughts, for example, “even though tom was foolish, mary thought he was ridiculous.” well, according to my mother, there were very few limitations as to what tom could have been and what mary might have thought of him. so i never did well on tests like that. how does tan build a central idea of her story in the excerpt? a) tan discusses

Step-by-step answer

P Answered by Specialist

The answer is C Tan gives an example of her experience with achievement tests to support the idea that they are not always accurate measures of language ability.

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