Aright cylinder has a radius of r inches and height of 2r inches.
in terms of r, the lateral area of the cylinder is r2π square inches.
the area of the two bases together is r2π square inches.
the total surface area of the cylinder is r2π square inches.

Part a) The lateral area is

Part b) The area of the two bases together is

Part c) The surface area is

Step-by-step explanation:

we know that

The surface area of a right cylinder is equal to

where

LA is the lateral area

B is the area of the base of cylinder

we have

Part a) Find the lateral area

The lateral area is equal to

substitute the values

Part b) Find the area of the two bases together

The area of the  base B is equal to

so

the area of the two bases together is

Part c) Find the surface area of the cylinder

we have

substitute

55/i dont know i do it for the points

step-by-step explanation:

it would open into a square depending on the type of envelope i’m not sure about the second part