Lesson: Volumes of Composite Solids Mathematics • 7th Grade

In this lesson, we will learn how to find volumes of composite solids consisting of two or more regular solids.

Lesson Plan

Students will be able to

find the volumes of composite solids where two solids have been joined together,
find the volumes of composite solids where one solid has been removed from another,
solve real-world problems by finding the volumes of composite solids.

Q1:

A roll of paper towels has the given dimensions. Determine, to the nearest hundredth, the volume of the roll.

Q2:

Find the volume of the hexagonal prism shown in the figure.

Q3:

The figure shows the design of a swimming pool. Work out, in cubic meters, the volume of water needed to fill the swimming pool completely.