7.3 VOLUME OF PRISMS AND CYLINDERS

Find the volumes of prisms and cylinders.

Volume

# of cubic units it takes to fill a three dimensional shapes

Units will be cubed To the third power

Prism

Solid with two parallel and congruent polygonal faces called bases.

Named by the shape of its base.

V = Bh“B” is the AREA of the base

Volume of Prisms

Example

Find the volume of the triangular prism.

V = Bh V = ( bh) h V =( • 4 • 9) 10 V = (2 • 9) 10 V = (18) 10 V = 180 cm3

2

1

2

1

You Try!

Find the volume of the cylinder. V =Bh V = V = V = V = cm3

This answer is in terms of pi

165.5 2 1625.30

484

hr 2

Assignment

Odds p. 266 #5-19, 23