The figures below are based on semicircles and squares. Find the perimeter and the area of each shape. Give your answer as a completely simplified exact value in terms of π (no approximations).

Part 1) The area of the figure is

Part 2) The perimeter of the figure is

Step-by-step explanation:

Part 1) Find the area of the figure

we know that

The area of the figure is equal to the area of three squares

so

Part 2) Find the perimeter of the figure

we know that

The perimeter of the figure is equal to two times the length side of the square, plus the circumference of six semicircles ( or the circumference of three circles)

Remember that

The circumference of a circle is equal to

where

D is the diameter of the circle

In this problem

so

simplify

486in is correct

step-by-step explanation:

answer is (b.

164 ft2)

a base  

18

b base  

7

h height  

8