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Volum prisma = 1/2 x 8 x 6 x 10
= 240 cm^2
volum limas = 1/2 x 1/3 x 6 x 8 x 6
= 48 cm^2
volum bangun = 240 + 48 = 288 cm^2
jawaban C
no 10)
phi x r^2 x t = V
22/7 x r^2 x 50 = 30.800
r^2 = 30.800 x 7 / (22x50)
r^2 = 196
r = 14
d = 2x14 = 28 dm = 2,8 m
jawaban D