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4x : 3x = 4 : 3
2( P + L ) = 70cm
P + L = 70/2
P + L = 35
4x + 3x = 35
7x = 35
x = 5
P .. 4 x 5 = 20
L... 3 x 5 = 15
Luas = P x L
= 20 x 15
=300 cm²
p = 4x
l = 3x
k = p + l + p + l
4x + 3x + 4x + 3x
14x
x = 70 : 14x
5
p = 4 X 5 = 20 cm
l = 3 X 5 = 15 cm
Luas = p X l
20 cm X 15 cm
300 cm persegi