Question

Find the total area for the cylinder with the given measurement.


r = 2, h = 4



A.16 pi

B. 20 pi

C. 24 pi

Answer 1

Area includes the 2 ends ($\pi r^2$ each) and the rounded surface $2\pi r h$

$A = 2 \pi r^2 + 2 \pi r h = 2 \pi(r^2+rh) = 24 \pi$

Choice C