Question

write an expression to represent the surface area of a cylinder with a height twice as long as its radius​

Answer 1

The two circles that make up the ends of the cylinder.

The side of the cylinder, which when "unrolled" is a rectangle

Pi (π) approximately 3.142

radius (r) of the cylinder

the height (h) of the cylinder

therefore your answer is

area = 2 π r 2 + 2 π r h

Answer 2

area = 2 π r 2 + 2 π r h

Explanation:

The two circles that make up the ends of the cylinder.

The side of the cylinder, which when "unrolled" is a rectangle

π is Pi, approximately 3.142

r is the radius of the cylinder

h height of the cylinder