Answer: 
Step-by-step explanation:

a = base
h = height

Solve the parentheses squared first.

2 and 36 can be simplied
2/2=1
36/2=18


Rounded to the nearest whole number... 
Answer:
g and g
Step-by-step explanation:
just did
Answer:
I think it's A I'm not sure
90 ÷ 2 is the same as 1/2 of 90.
Either way you get 45.