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Answer Key<br />

Practice B<br />

1. 2. 2 3. 4. 8 5. 4<br />

6. 1 7.<br />

8. 9.<br />

10. 11. y 21<br />

y <br />

5x 2<br />

y ; 7<br />

x<br />

21<br />

x ; 21<br />

16 2 8<br />

y <br />

10<br />

3x 3 ; 22 3<br />

3<br />

y <br />

2x 2; 4<br />

2<br />

2<br />

13<br />

2<br />

3x 1; 3<br />

27 117<br />

12. y x ; 99 13.<br />

10 2<br />

3V<br />

14. 15. h 16.<br />

r2 s P<br />

3<br />

17. 18.<br />

19. 20. 21. s P<br />

V<br />

h <br />

r<br />

; 11 cm<br />

4 2<br />

r S<br />

b2 <br />

2h<br />

2A<br />

h b h 1<br />

2A<br />

b1 b2 22. 23.<br />

24. 8 m 25. 64 m2 201.1 m2 r3 3V<br />

A<br />

l ; 3 ft<br />

w<br />

; 4 m<br />

4<br />

s 2<br />

3 h<br />

C 5<br />

F 32<br />

9

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