Question

Dr. Jones told Carolyn to drink a glass of water 6 times a day. The glass has a diameter of 3 inches and a height of 7 inches. If the glass is empty, what is the minimum amount of water needed to fill the glass?​

Answer 1

Given:

A Glass of diameter 3 inches and height 7 inches

To Find:

Volume of glass

Solution:

It is given that,

diameter of glass = 3 inches

=> Radius of glass = 1.5 inches

Also, height of glass = 7 inches

It is clear that Glass is in the shape of cylinder

Now, Volume of glass = πr²h

=> Volume of glass = $\frac{22}{7}$×$(1.5)^{2}$×$7^{}$

=> Volume of glass = 22 × 2.25

=> Volume of glass = 49.5 inch³

=> Volume of glass = 811.15 cm³

Hence, 811.15 ml of water is needed to fill the glass.