Question

Plx answer Find the exact volume of the cylinder.

A) 64π mm3
B) 128π mm3
C) 256π mm3
D) 512π mm3
sorry the pic is blue

Answer 1

the answer is B) 128

Answer 2

if the diameter of the cylinder's base is 8, then its radius is half that, or 4.

`\bf \textit{volume of a cylinder}\\\\ V=\pi r^2 h~~ \begin{cases} r=radius\\ h=height\\ \cline{1-1} r=4\\ h=8 \end{cases}\implies V=\pi (4)^2(8)\implies V=128\pi`