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144 = s^2
akar 144 = s
12 = s
maka kelilingnya :
K = 4s
= 4(12)
=48 cm
^itu pangkat
maka s = akar pangkat 2 dari 144 = 12
dit. K = ....?
peny.
k = 4 x s
= 4x 12
= 48 cm