Question

A right cylinder has a volume of 2000 cubic inches and a height of 4 inches. What is the radius of the cylinder to the nearest tenth of an inch

Answer 1

Explanation at the top answer at the bottom

V=B*h
The height equals to 4
Volume equals to 200

Let's plug it in
2000=B*4
B*4=2000
This means something multiplied times 4 equals 2000
4/2000=500
500*4=2000
B=500 the base of a cylinder is a circle and that base includes our radius

so now we know that the Base of a cylinder is equal to 500

Area of circle = 500
The formula for area of a circle is 3.14*r^2
let's plug everything in
3.14*r^2=500
r^2=496.9
22.23^2=496. Approximately

Radius equals to

R=22.2

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