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A day full of math games & activities. Find one near you.
What is the formula for the surface area of a cylinder?
Solution:
The surface area of any 3-d object is the total area of all of its surfaces.
We know that a cylinder has a curved surface as its main body and two circular faces.
The surface area of a cylinder is expressed as the total area of all of its surfaces.
Therefore, the surface area of a cylinder = area of two circular faces + area of the curved surface
= 2 × πr2 + 2πrh
= 2πr(r + h)
where, the base radius is ‘r’, and height is ‘h’
Hence, the formula for the surface area of a cylinder is 2πr(r + h).
What is the formula for the surface area of a cylinder?
Summary:
The surface area of a cylinder is 2πr(r + h).