Question

What is the approximate volume of a cylinder with a diameter of 12 meters and a height of 7 meters? Use 3.14 for pi.
a. 131.9 m3
b. 263.8 m3
c. 791.3 m3
d. 3165.12 m3

Answer 1

$V=\pi r^2 h$
r - radius, h - height
The diameter is twice the radius.

$d=12 \ m \\ r=\frac{12}{2} \ m = 6 \ m \\ h=7 \ m \\ \\ V=\pi \times 6^2 \times 7=\pi \times 36 \times 7=252 \pi \approx 252 \times 3.14=791.28 \approx 791.3$

The answer is c. 791.3 m³.