why is the volume of this cylinders formula 1017.36 mm^3 use n=3.14

V = nr^2 h
height = 9
diameter = 12

First, we must find the radius of the cylinder using the given diameter.

Radius (r) = diameter / 2
r = 12 / 2
r = 6 mm

Next, we can substitute the values of radius, height, and π (approximated to 3.14) into the formula for the volume of a cylinder:

V = πr^2h
V = 3.14 * 6^2 * 9
V = 3.14 * 36 * 9
V = 1017.36 mm^3

Therefore, the volume of the cylinder is 1017.36 mm^3.