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Aleksandr-060686 [28]
3 years ago
13

What is the formula for a cylinder and a circle?

Mathematics
1 answer:
matrenka [14]3 years ago
4 0
The surface area of a right cylinder equals 2 \pi rh+2 \pi r^2

As you can see in the attached picture, the surface area consists of two equal circles (bottom and top one) and area that would look like a rectangle, if "unraveled".

The formulae for the surface area of the circle is \pi r^{2}. You have to multiply it by two and add to the area of the "rectangle", which equals 2 \pi rh where 2 \pi r is the circumference of the circle and h is the height of the cylinder.



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