Question

What is the area for #2 and #4
evidence is would be greatly appreciated!

Answer 1

2.)70

4.)451,17

Explanation:

2.)

a1 = 8*5 = 40

a2 = ((20-8)*5)/2 = 30

aTotal = 40+30 = 70

4.)

a1 = 18*18 = 324

a2 = (πr²)/2 = 127,17

aTotal = 127,17 + 324 = 451,17