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l=l
k=36
2(p+l)=36
2(2+l+l)=36
2(2+2l)=36
4+4l=36
4l=36-4
4l=32
l=32/4
l=8
p=2+l
p=2+8=10
luas=pxl
luas=10x8=80
2p + 2l = 36 (dikali 1) = 2p + 2l = 36
p - l = 2 (dikali 2) = 2p - 2l = 4 -
4l = 32
i = 32:4 = 8
substitusi:
p - l = 2
p - 8 = 2
p = 2 + 8
p = 10
L = p x l
= 10 x 8
= 80 cm²
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