Surface Areas of Prisms and Cylinders

1
Surface Areas of Prisms and Cylinders
LESSON 11-2
Additional Examples
Quick Check
Use a net to find the surface area of the cube.
Find the area of one face. 112 121
The area of each face is 121 in.2.
6 121
726
Because there are six identical faces, the
surface area is 726 in.2.
2
Surface Areas of Prisms and Cylinders
LESSON 11-2
Additional Examples
Find the surface area of a 10-cm high right
prism with triangular bases having 18-cm edges.
Round to the nearest whole number.
The triangle has sides of length 18 cm, so p 3
18 cm, or 54 cm.
3
Surface Areas of Prisms and Cylinders
LESSON 11-2
Additional Examples
Quick Check
(continued)
Rounded to the nearest whole number, the surface
area is 821 cm2.
4
Surface Areas of Prisms and Cylinders
LESSON 11-2
Additional Examples
The radius of the base of a cylinder is 6 ft,
and its height is 9 ft. Find its surface area in
terms of .
S.A. L.A. 2B Use the formula for surface
area of a cylinder.
Quick Check
5
Surface Areas of Prisms and Cylinders
LESSON 11-2
Additional Examples
A company sells cornmeal and barley in
cylindrical containers. The diameter of the base
of the 6-in. high cornmeal container is 4 in. The
diameter of the base of the 4-in. high barley
container is 6 in. Which container has the
greater surface area?
6
Surface Areas of Prisms and Cylinders
LESSON 11-2
Additional Examples
(continued)
Cornmeal Container
Barley Container
Quick Check