Question

The volume of a cone is 141.3 cubic inches. The height of the cone is 15 inches. What is the radius of the cone, rounded to the nearest inch? Use π = 3.14

Answer 1

the radius is 5 inches

Answer 2

Answer: The radius of the cone is 3 inches.

Explanation:

Volume of cone =
`(1)/(3)\pi r^2 h` , where r= radius and h= height

As per given , we have

The volume of a cone is 141.3 cubic inches.

The height of the cone is 15 inches., i.e. h= 15 inches

Substitute all values in formula , we get

`141.3=(1)/(3)(3.14) r^2(15)\\\\\Rightarrow\ r^2=(141.3*3)/(3.14*15)\\\\\Rightarrow\ r^2=9\Rightarrow\ r=√(9)=3`

Hence, the radius of the cone is 3 inches.