Jawabanmu

2014-08-17T21:07:28+07:00
Gunakan prinsip kesebangunan
p=panjang
l=lebar

p1/p2 = l1/l2
84/108 = 70/a
84 x a = 108 x 70
a= 90
2014-08-17T21:07:44+07:00
84/108 = 70/a
84a = 7560
a = 7560/84
a = 90 meter
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