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Ch 11 Review
Directions: Find the following areas. If necessary, round your answer to the nearest tenth
or leave your answer in simplest radical form.
1.
6.
2.
7.
3.
8.
4.
9.
5.
10. Find the area of the shaded region
11.
12. Find the area of a regular heptagon with apothem 12 feet and side length 15.3 feet.
13. Find the area of a regular hexagon with a perimeter of 24 cm.
14. Find the area of an equilateral triangle with side length 36 mm.
15. Find the area of a circle with a circumference of 20π meters. Use 3.14 for pi.
16. Find the area of a parallelogram with vertices A (-4, -2) B(-1, 3) C(3, 3) and D(0, -2)
17. Use right triangle trig to find x and y rounded to the nearest tenth
Answers
1. 40 feet squared
10. 18.2 units squared
2. 168 units squared
11. 301.4 units squared
3. 60 inches squared
12. 642.6 ft squared
4. 18 cm squared
13. 24 3 cm squared (41.6)
5. 11 23 units squared (52.8)
14. 324 3 mm squared (561.2)
6. 522.5 feet squared
15. 314 meters squared
7. 702.9 units squared
16. 20 units squared
8. 39.8 meters squared
17. x = 200.0, y= 440.4
9. 84 − 9 3 units squared (68.4)