Name
Date
Practice
HW
10-7 Areas of Circles and Sectors
Find the area of each circle. Leave your answer in terms of .
1.
2.
5. Jerry has a lawn sprinkler that sprays water out into a circle. The diameter of
the circle is 10 ft. What area can Jerry water with the sprinkler? Round to the
nearest tenth.
6. A dog is on a leash that is attached to a pole in the ground. If the leash is 8
ft long, in how much area can the dog move around? Round to the nearest
tenth.
Find the area of each SHADED sector of a circle. Leave your answer in terms of .
7.
8.
9.
13.
14.
19.
20.
21. The school is planting a circular garden. If the diameter of the garden is 6 ft,
what is the garden’s area to the nearest tenth of a square foot?
22. An apartment complex is replanting grass seed in a play area. The area is a
circle that is 30 ft in diameter. They need 1 lb of grass seed for every 300
square ft. Find the area to the nearest tenth of a square foot. Then calculate
how many 1-lb bags of grass seed they need.
23. A circular fountain is surrounded by flowers. The fountain’s diameter is 8 ft. The
flowers extend 1.5 ft out from the fountain on all sides. What area do the flowers
cover to the nearest tenth of a square foot?
24. Nearly 80% of executives say their companies use email; 36% say they peek at their
employee’s mail. The percentage who say an employer has the right to read anything in
a company’s electronic communication system is show in the graph. Find the measure
of the central angle for “yes”. (Source: USA Today)