SOAL
KUNCI JAWABAN
1. C
2. C
3. B
4. D
5. A
6. D
7. B
8. A
9. C
10. D
11. D
12. C
13. C
14. A
15. B
16. A
17. B
18. A
19. A
20. B
22. Keliling = 25 + 9 + 15 + 6 + 10 + 35 = 100 cm
Luas = (25 x 10) + (15 x 16) + (10 x 10) = 250 + 240 + 100 = 590 cm2
23. K = 2 x p + 2 x l
250 = 2 x 80 + 2 x l
250 = 160 + 2 x l
2 x l = 250 - 160
2 x l = 90
l = 90/2 = 45 cm
24. <A2 dan <B4 ; <A3 dan <B1
25. Yang paling berat = 18 x 10 = 180 kg