Answer:
The answer to your question is: V = 5x² + 40x + 80
Step-by-step explanation:
Formula = V = r²h
r = x + 4
h = 5
Substitution
V = (x + 4 )² 5
V = (x² + 8x + 16)5 expand
V= 5x² + 40x + 80 simplify
numerator; 5.01×(10^5)= 5.01×100000
denomenator ; 7.8×(10^2)= 7.8×100
therefore : 501000/780
= 642.3077 answer