Question

The radius of a cylindrical gift box is ​(2x+3​) inches. The height of the gift box is three times the radius. What is the surface area of the​ cylinder? Write your answer as a polynomial in standard form.

Answer 1

Hope this helps ....

Answer 2

The SA of each end is pi*r^2

The lateral SA is 2*pi*r*h

Multiply and add