A) (5s + 2 / 4) x (4) = Perimeter
B) ( s + 9) x (2) + ( 3s - 5 ) x (2) = Perimeter
C) 22 + 48 = 70
I can sure try mate!!! What is it that you need help with?
Correct answer is D).
A) and C) are polynomials, so x∈R, in B) we have √x, and in this case x ≥ 0.
V = π r² h
V = π (4)² 8
V = 402.12
Hope this helps :)