Answer:
30x^5 + 15x^4 + 105x^3
Step-by-step explanation:
V = l*w*h
l = 3x
w = 5x^2
h = 2x^2 + x + 7
l*w = 3x * 5x^2 = 15x^3 (add exponents when multiplying variables)
l*w = 15x^3
V = l*w*h = 15x^3(2x^2 + x + 7) = 30x^5 + 15x^4 + 105x^3
I would say 260
Hope I helped
:)
V = 22.3
radius is 2.2 and we use the volume formula to find the answer