Need help with math problem if do get 5 star

Option A. 56 square units

Step-by-step explanation:

Using the formula:

 or  

We substitute x with a and y with b:

x should be 3 units at the top, it has probably been cut off.

To work out b which should be the length at the bottom:

5+x+5 = 5+3+5 = 13

So b = 13

Now we substitute all values into the equation:

A = ((3+13)÷2)×7

A = (16÷2)×7

A = 8×7

A = 56

Therefore our answer is 56 square units

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing im pretty sure that is the right answer

step-by-step explanation: