Geometry

What is the difference between the surface area of the sphere and the lateral surface area of the cylinder?

Hello tomtom!

$V_c =\pi r^2\cdot 2r=2\pi r^3=144\\ r=(\dfrac{72}{\pi })^{\frac{1}{3}}$

$LS_c=2\pi r^2+2\pi r\cdot 2r=2\pi r^2(1+2)=6\pi r^2\\ SA_s=4\pi r^2\\ LS_c-SA_s= 2\pi r^2=2\pi \cdot (\dfrac{72}{\pi })^{\frac{2}{3}} \\ \color{blue}LS_c-SA_s=50.6954$

The surface area of the sphere and the lateral surface area of the cylinder is 50.6954.

 !