A playground has two sides that each measure 70 feet and two sides that each measure 50 feet named the quadrilateral.

The possible shapes of the playground should be: parallelogram, rectangle, and kite because all of these shapes have 2 pairs of equal sides, and also the question didn't specify if the sides are opposite to each other or not so kite is also a possible option.

The possible shapes of the playground should be: parallelogram, rectangle, and kite because all of these shapes have 2 pairs of equal sides, and also the question didn't specify if the sides are opposite to each other or not so kite is also a possible option.

For every 8 cars there are 7 trucks

Therefore,

Cars:Truck=8:7

Answer is B)8:7

The answer is in the image 

Here,

tip=18%of $32

tip=(18/100)*32

=0.18*32

=$5.76

Total payment=32+5.76=$37.76

The wood before starting =12 feet

Left wood=6 feet

Wood used till now=12-6=6 feet

Picture frame built till now= 6/(3/4)

=8 pieces

Therefore, till now 8 pieces have been made.

The wood before starting =12 feet

Left wood=6 feet

Wood used till now=12-6=6 feet

Picture frame built till now= 6/(3/4)

=8 pieces

Therefore, till now 8 pieces have been made.

Salesperson will make 6% of 1800

=(6/100)*1800

=108

Salesperson will make $108 in $1800 sales

The answer is in the image 

Let the father's age be x and son's be y

10 years before-

Father age=x-10

sons age=y-10

Given,

x-10=10(y-10)

x-10=10y-100

Given present age of father=40

therefore,

x=40

40-10=10y-100

10y-100=30

10y=130

y=130/10

y=13

Therefore present age of son=13years