Bell Ringer 1. Describe the shape resulting from the cross section. 2. 3. 4

Bell Ringer1.

1.

Describe the shape resulting from the cross section.

2.

3. 4.

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Homework Check

Section 12.2Volume of Prisms

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Vocabulary•Volume- The measure of space occupied

by a three dimensional region. It is measured in cubic units.

Formulas•Area of a Rectangle: length x width•Area of a Triangle: ½ x base x height•Area of a Circle: ∏ x (radius)2

Notes•How to calculate volume:

▫The Area of the Base times Height

Example 1Find the Volume of a Rectangular Prism

Find the volume of the rectangular prism.


Find the volume of a rectangular prism with a length of 10 feet, a width of 13

feet, and a height of 21 feet.


Find the volume of the rectangular prism.

Example 4Volume of a Triangular Prism

Find the volume of the triangular prism.

Be careful not to confuse the height of the triangle and the height of the prism.





Example 7Find the Missing Length

A room air conditioner can cool a room with a volume of 1600 cubic feet. If a room has a

height of 8 feet and a length of 16 feet, what is the maximum width of the room?


A children’s rectangular pool holds 17.5 cubic feet of water. What is the width of the pool if its length is 3.5 feet and its height is 1 foot?


Cake batter is poured into a pan that is rectangular prism with an 8-inch square base. If the cake batter occupies 192 cubic inches,

what will be the height of the batter?

HomeworkSection 12.2 #1 – 5, 9-12, 14

HomeworkSection 12.2 #1 – 5, 9 – 12, 14

HomeworkSection 12.2 #1 – 5, 9 – 12, 14

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Bell Ringer 1. Describe the shape resulting from the cross section. 2. 3. 4