Left over volume of fish tank that is 12/25ths full with base of 45 cm squared.

Question

A fish tank has a base area of 45 cm squared and is filled with water to a depth of 12cm. If the height of the tank is 25 cm, how much more water will be needed to fill the tank to the brim?

Answer 1

Filled to the brim the volume is 45*25 = 1125 cubic centimeters

 

Currently the volume is 45*12 = 540 cubic centimeters

 

So there is 1125 - 540 = 585 cubic centimeters available.

 

Note that 25 - 12 - 13 for the height and 13 * 45 = 585