amymedam amymedam
  • 22-03-2020
  • Mathematics
contestada

What is the formula for the area of a cylinder?

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wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 22-03-2020

Answer:

2 pi*r^2 + 2 * pi *r * h

Step-by-step explanation:

I will assume that you are looking for surface area

We need to find the area of the top and the bottom, which is the area of a circle

top: pi * r^2

Bottom: pi r^2

Then the side which is the circumference times the height ( it is a rectangle)

side: 2 * pi *r * h

Add them together to get the surface area

SA = pi * r^2 + pi * r^2 + 2 * pi *r * h

    = 2 pi*r^2 + 2 * pi *r * h

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