Question

A company is designing a new cylindrical water bottle. The volume of the bottle will be 189 cm cubed. The height of the water bottle is 7.3 cm. What is the radius of the water​ bottle? Use 3.14 for pi.

Answer 1

The radius is 2.9cm

Explanation:

This problem bothers on the mensuration of solid shapes, a cylinder

We know that the volume of a cylinder is given as

V= πr²h

Given data

Volume V= 189cm³

Height h= 7.3cm

Radius r=?

To solve for the radius we need to substitute our data in the formula and solve for r

V= πr²h

189= 3.14*r²*7.3

189= r²*22.922

making radius subject of formula we have

r²= 189/22.922

r² =8.245

r= √8.245

r= 2.87

r= 2.9cm