Name __________________________________ Hour _____
Homework Packet 11.4
11. – 11.5
LESSON 11.4
For use with pages 746–752
Find the indicated measure.
1. A circle has a circumference of 36 meters
meters. Find the exact radius. ሺߨ should be in your answer.)
2. A circle has a circumference of 29 feet. Find the exact diameter. ሺߨ should be in your answer.)
3. A circle has a radius of 15 centimeters. Find the exact circumference. ሺߨ should be in your answer.)
Find the length of AB .
4.
5.
6.
In D shown below, ∠ADC ≅ ∠BDC.. Find the indicated measure.
7. m ACB
8. Length of
9. m CB
10. m ABC
11. Length of ACB
12. Length of BAC
CB
Find the indicated measure.
13. Length of AB
14. Circumference of circle Q
15. Radius of Q
17. Radius of ñ J
Find the length of AB.
19.
16.
Perimeter of the shaded area.
18. Circumference of ñ Q.
20.
Find the indicated measure.
21. Circumference of ñ Q
22. Radius of ñ Q
23. Length of AB
24. Go-Cart Track Find the distance around the track on the inside lane and on the outside lane.
LESSON 11.5
For use with pages 755–761
Find the exact area of the circle. Then find the area to the nearest hundredth.
25.
26.
6.
27.
Exact________
Exact________
Exact________
Rounded_______
Rounded_______
Rounded_______
Find the indicated measure.
28. The area of a circle is 58 square inches. Find the radius.
meters. Find the radius.
29. The area of a circle is 37 square me
30. The area of a circle is 173 square inches. Find the radius.
31. The area of a circle is 290 square meters. Find the radius.
32. The area of a circle is 106 square centimeters. Find the diameter.
33. The area of a circle is 249 square feet. Find the diameter.
34. The area of a circle is 654 square centimeters. Find the diameter.
35. The area of a circle is 528 square feet. Find the diameter.
Find the circle’s area, then find the areas of the shaded sector.
36.
Circle Area_________
Shaded sector________
37.
Circle Area_________
Shaded sector________
38.
Circle Area_________
Shaded sector________
39.
Circle Area_________
Shaded sector________
40.
Circle Area_________
Shaded sector________
Use the diagram. Find the area of the circle. Then find the radius and diameter.
41.
42.
43.
Circle Area_____
Circle Area_____
Circle Area_____
Radius_____
Radius_____
Radius_____
Diameter_____
Diameter_____
Diameter_____
44.
45.
Circle Area_____
Circle Area_____
Circle Area_____
Radius_____
Radius_____
Radius_____
Diameter_____
Diameter_____
Diameter_____
46.
Find the area of the shaded region.
47.
48.
49.
50.
51.
52.
53. Hockey A face-off circle from a hockey rink is shown at the right. The diameter of the circle is 30
inches. Find the area of the face-off circle.
54. A pizza is cut into 8 congruent pieces as shown. The diameter of the pizza is 16 inches. Find the area of
one piece of pizza.
55. Fountain A circular water fountain has a diameter of 42 feet. Find the area covered by water from the
fountain.
56.
Landscaping The diagram at the right shows the area of a lawn covered by a water sprinkler.
a. What is the area of the lawn that is covered by the sprinkler?
b. The water pressure is weakened so that the radius is 10 feet. What is the area of lawn that will be
covered?