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3 : 5
3 : 2
= 9 : 15 : 10
tinggi= 10/9 x 18
= 20 cm
P : L = 5 : 3
P : T = 3 : 2
L = 18 m
Jawab:
P = 5/3 x 18 = 30
Tinggi balok adalah:
T = 2/3 x 30
T = 20 m
Salam........ ^^