Mathematics: Diameter of a circle if the radius is 3cm

15.03.2020

Diameter of a circle if the radius is 3cm

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Mathematics

Which equation listed below, when solved, shows how to find the diameter of a circle if the radius is 7 inches? A) 7 x 7 B) 7 x π C) 7 x 2 D) 7 + 2

Step-by-step answer

P Answered by PhD

C) 7 x 2

Step-by-step explanation:

Option C) 7 x 2 is the correct answer

The diameter is twice the radius and to calculate

Diameter = radius × 2

Mathematics

Can you guys just tell me if it s true or false please, it s urgent. a)the radius of a circle is twice its diameter b)to find the diameter of a circle, divide its circumference by (pi) c)the circumference of a circle is greater than its diameter d)the circumference of a circle is twice its radius e)to find the diameter of a circle, multiply its radius by two

Step-by-step answer

P Answered by PhD

a is true b is false c is true d is false e is true

Step-by-step explanation:

Mathematics

Step-by-step answer

P Answered by PhD

a is true b is false c is true d is false e is true

Step-by-step explanation:

Mathematics

7 In a circle, which ratio is equivalent to t? - One er O A. area of a circle to its circumference OB. radius of a circle to its area -67 Q 67 O C. diameter of a circle to its radius OD, circumference of a circle to its diameter

Step-by-step answer

P Answered by Master

Step-by-step explanation:

The circumference of a circle is $2\pi r$ , while the diameter of a circle is 2r. $\frac{2\pi r}{2r} = \pi$

Mathematics

Find the diameter of each circle given the radius. radius=6cm radius=5cm radius=9cm radius=8cm radius-1.5cm radius=18cm radius=4cm

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P Answered by PhD

1. 12cm.

2. 10cm.

3. 18cm.

4. 16cm.

5. 3cm. (or -3 if your question was negative.)

6. 36cm.

7. 8cm.

Explanation:

To find the radius of a circle, simply divide the diameter by 2.

With this being said we can just add on top of the given radius.

Example:

The given radius is 5cm. What is 5cm + 5cm? 10cm.

Thus, getting our answer.

Mathematics

Step-by-step answer

P Answered by Specialist

Step-by-step explanation:

The circumference of a circle is $2\pi r$ , while the diameter of a circle is 2r. $\frac{2\pi r}{2r} = \pi$

Mathematics

Find the diameter of each circle given the radius. radius=6cm radius=5cm radius=9cm radius=8cm radius-1.5cm radius=18cm radius=4cm

Step-by-step answer

P Answered by PhD

1. 12cm.

2. 10cm.

3. 18cm.

4. 16cm.

5. 3cm. (or -3 if your question was negative.)

6. 36cm.

7. 8cm.

Explanation:

To find the radius of a circle, simply divide the diameter by 2.

With this being said we can just add on top of the given radius.

Example:

The given radius is 5cm. What is 5cm + 5cm? 10cm.

Thus, getting our answer.

Mathematics

Acircle passes through opposite vertices of a square with side 40cm. if the diagonal of the square is a diameter of a circle, calculate the radius of the circle.

Step-by-step answer

P Answered by Specialist

28.28cm

Step-by-step explanation: since the squares sides is 40 then draw lines diagonally in the circle and then they'll make triangles and find the hypotenuse then the 56.56 which is the diameter is divided by two to find the radius

Mathematics

Acircle passes through opposite vertices of a square with side 40cm. if the diagonal of the square is a diameter of a circle, calculate the radius of the circle.

Step-by-step answer

P Answered by Specialist

28.28cm

Mathematics

Given c(4,3) d(-4,-3) and cd is the diameter of the circle, find the radius of the circle

Step-by-step answer

P Answered by Master

use the distance formula to find the diameter of the circle. From there, you can divide the diameter in half to find the radius of the circle

Step-by-step explanation:

so... the distance formula is...

d = $\sqrt{(x_{2} - x_1)^{2}+(y_2 - y_1)^{2} }$

so...you just substitute the values into the equation

d = $\sqrt{(-4-4)^2 + (-3-3)^2}$

d = $\sqrt{64+36}$

d = 10

so...that means the diameter is 10

to find the radius you do 10/2 because radius is half of the diameter

so the radius is 5

hope that helps...that took so long to write out

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