Answer:
The area is 252
Step-by-step explanation:
f(4y) = -8y - 3
Step 1: Define variables
f(x) = -2x - 3
f(4y) = x = 4y
Step 2: Plug in x = 4y
f(4y) = -2(4y) - 3
4x+12
10+6+9+13+7= 45
and divide it by 5
the answer is 9
140
and plug in r=4 and h=13 to get 
, so 
.