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18. niali 9 = (54derajat)
= 54 ÷ 360 × 100 = 15 orang
19. persentase nilai 8 ( 90 derajat karena siku-siku)
= 90 ÷ 360 × 100 = 25 %
20. lebih besar dari nilai 7 (nilai 8 + nilai 9)
= 90derajat + 54derajat = 144 derajat
= 144 ÷ 360 × 100 = 40 %
semoga bermanfaat :)
maaf jika salah
18. nilai 9 (360-90-72-108-36)/380 x 100
7
54/380 x 100 = 15 org
19. 90/360 x 100 = 25 org
20. 144/360 x 100% = 40%