Volume of Prisms & Cylinders

1. 12.4 Volume of Prisms & Cylinders
HW pg. 822 #3­12, 15­21
April 17, 2015
Bellwork
Choose a pyramid and a cone from the back table.
Find the surface area of each.
Put the bellwork in the homework bin.

2. 12.4 Volume of Prisms & Cylinders
HW pg. 822 #3­12, 15­21
April 17, 2015
12.4 Volume of Prisms & Cylinders
What is volume??????
the amount of space inside of an object
The concept of finding volume of a prism or
cylinder is to find the area of the base
& multiply times the height of the object!
Volume of a Prism:
V = Bh where B = area of the base and h = height of prism
**Remember the key is to correctly idenfy the shape of the prism
base and to then insert the area formula for the base shape into
the "A" poron of the volume formula.
**The "height" of the prism is always the perpendicular distance
between the 2 parallel bases.
8 in
6.2 in
10.8 in
Find the volume of the solid.

3. 12.4 Volume of Prisms & Cylinders
HW pg. 822 #3­12, 15­21
April 17, 2015
Volume of a Cylinder:
**Same concept as a prism!!! V = Bh
V = πr2h where r = radius of the base & h = height of prism
14.2 cm
16 cm

4. 12.4 Volume of Prisms & Cylinders
HW pg. 822 #3­12, 15­21
April 17, 2015
HW:
12.4 pg. 822
#3‐12, 15‐21