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PSYCHO15rus [73]
3 years ago
5

The area of the circular base of a cylinder is 367 square units. The height of the cylinder is 2 units.

Mathematics
1 answer:
kirza4 [7]3 years ago
4 0

Answer:

A=135.82u^2

Step-by-step explanation:

The formula to calculate the lateral area of a cylinder is:

A=h*c

where h is the height of the cylinder, and c is the circumference (perimeter) of the circular base:

c=2\pi r where r is the radius

To calculate the circumference we need the radius of the circle, which we can calculate because we know that the area the circle is:

367u^2,

substituting this in the formula for the area of a circle:

A_{c}=\pi r^2

367u^2=\pi r^2

and solving for the radius:

\frac{367u^2}{\pi}=r^2\\\\\sqrt{\frac{367u^2}{\pi } }=r\\\\\sqrt{\frac{367u^2}{3.1416} }=r\\\\10.808u=r

now that we know the radius, we calculate the circumference:

c=2\pi r\\c=2\pi (10.808u)\\c=67.91u

and finally we go back to the formula for the lateral area:

A=h*c

and substitute the height: h=2u and the circumference:

A=(2u)(67.91)\\A=135.82u^2

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