We continued our work with areas of polygons today by reviewing the homework and making a formula notecard for the quiz tomorrow. We went over some sample area problems that involve perimeter in class before starting the assignment that deals with more practice problems.
Assignment: area of polygons worksheet
Answers appear below (all the answers are listed, but not all the problems were assigned)
Section 11-2 side
1. 231 square inches
2. 72 square millimeters
3. 160 square inches
4. 264 square cm
5. 99 square cm
6. 115 square mm
7. 7 cm
8. 19 inches
9. 8 times square root of 5 (or 17.9)
10. 16 times square root of 3 (or 27.7)
11. 400 square cm
12. x squared - 25
13. length = 20 cm; width = 15 cm
14. 96
15. $1000
16. 70.7 square feet]
Section 11-3 side
1. 45
2. 200
3. 208
4. 56 times square root of 3 (97.0)
5. 297
6. 108
7. 7
8. 8
9. 220
10. height = 16; perimeter = 136
11. area = 160; median = 20
12. height = 16
13. 33 km
14. 128 square feet
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