Question

A cylindrical can of baked beans has a diameter of 8 cm and a height of 9 cm.

Answer 1

Formula for volue of cylinder is area time height. Lets find area
A=$\pi r^2$
diameter=2r
8=2r
r=4
Now substitute r to $A= \pi r^2$
A=$\pi 4^2= 16\pi$
Now we have formula
V=$16 \pi *height=16 \pi *9=144 \pi$ - its the result, so B