Find the surface area of each cube.
- e15 in. 6. e8 m 7. e2.1 cm 8. e 1 .
1
3 yd
Find the surface area of each rectangular prism.
- 9 ft 12. 5 m
w 2 .
1
3 ft w1.4 m
h 1 .
1
2 ft h5.9 m
- 9 ft 12. 5 m
Surface Area of a Cylinder
Find the surface area of a
cylinder with a base that
has a radius of 2 in. and a
height of 4 in.
Surface Area (2 area of circular base) (area of rectangular surface)
(2 r^2 ) (2rh)
S 2 3.14 (2 in.)^2 2 3.14 2 in. 4 in.
25.12 in.^2 50.24 in.^2
75.36 in.^2
The surface area of the cylinder is 75.36 in.^2.
Find the surface area of each cylinder. Use 3.14 for p.
Surface Area of a Cylinder
S 2 r^2 2 rh
- Ed will paint the walls and ceiling 18. Cans made by a local canning company
of a room that is 14 ft wide by are 6.4 cm in diameter and 12.5 cm
15 ft long by 8 ft high. What is the high. How much aluminum is needed
surface area of the room? to make 100 cans?
2 m
6 m 4 m 4 in.
3 in.
6 in.
4 cm
0.6 m
5 ft
1.2 yd
h 4 in. 4 in.
2 in.
r 2 in.
Net
2 in.
C 2 r
7 in.
4 in. 7 cm
9 cm
8 yd
13 yd 10.3 m 6.6 m
height of prism
width of rectangle
8206-2_474-475 3/23/06 2:40 AM Page 475