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4 =2(3l+l) = 1,5*0,5
4/2=4l = 0,75
2/4=l
0,5=l
p=3(0,5)
p=1,5
Keliling = 4
K = 2 X (p+l)
= 2 X (3lebar + lebar)
= 2X4lebar
= 8 lebar
K = 4
8 lebar = 4
lebar = 4/8
lebar = 1/2 = 0,5 cm
Panjang = 3Xlebar
= 3X0,5
= 1,5 cm
Luas = panjang X lebar
= 0,5 X 1,5
= 0,75