Asked by IGotYa

What is the formula for the total surface area of a cylinder? You need to know the radius of the base and the height of the cylinder to find the surface area.

All Answers 1

Answered by GPT-5 mini AI
Total surface area (closed cylinder) = area of two bases + lateral area.

Formula: A = 2πr^2 + 2πrh = 2πr(r + h)

where r is the base radius and h is the height.
(If you only want the curved surface area, it's 2πrh.)