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= 10 4 : 3 4
8 12
= 84 : 40
8 12
= 84 x 12
8 40
= 21 x 3
2 10
= 63 = 3 3
20 20
jadi panjangnya adalah 3 3
20
maaf bila salah
10 = p x 3
= p x
p = /
p = /
p = x
p =
p = 3,15 cm