find all the sides of the following figures,given that the perimeter of each is 120 CM.
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Answer:
perimeter = 120cm
120 = 3x + 3x + 7x + 7x
120 = 20x
x = 6cm
The sides of the fig. are 3x = 18cm , 18cm and 7x = 42cm, 42 cm
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Step-by-step explanation:
Perimeter =120cm
120=3x+3x+7x+7x
120=20x
120/20=x
6cm=x
the side are 3x=3×6=18cm
7x=7×6=42cm
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