Question

A right cylinder has a radius of 5 and a height of 9. What is its surface area?

Answer 1

the formula for the surface area of a right circular cylinder is 2B + 2pi rh, where B is the area of the bases (both circles)

Answer 2

I Dont Understand It

Answer 3

what is the circumference of one of the base circles?

Answer 4

circumference times height gives side area

and the area of the bases are the areas of their circles; find the area of the circule and times it by 2

then add up all the side and base areas to get the total surface area