Question

How do you calculate the area of the shape that makes up the top and bottom of the cylindee

Answer 1

Cylinder is consists of two circles at both sides .

• Area of circle=πr^2

There are two circles

Total area:-

• 2πr^2

Answer 2

The shape that makes up the top and bottom of a cylinder is Circle.

• The formula to find area of circle is:

Where,

• r is the Radius of the circle

Since, There are two circles we will multiply the area by 2

$\boxed{2\pi {r}^{2} }$

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Some important formulas related to circle:

$\boxed{ \sf \: circumference = 2\pi r}$

$\boxed{ \sf \: area = \pi {r}^{2} }$

$\boxed{ \sf \:radius = \frac{1}{2} \times diameter }$

$\boxed{ \sf \:diameter = 2 \times radius }$