Question

The perimeter of a parallelogram is 40 m. If one
side is 4 m longer than the other side, then what
are the lengths of the sides of the parallelogram?​

Answer 1

Let the first side is x

then the second side become (x+10)

According to the question

2(x+x+10) =140

2(2x+10)=140

2x+10=70

2x=70-10

2x=60

x=30

first side=x=30cm

second side=x+10=40cm

Answer 2

Answer:

$we \: know \: parallelogram \: have \: opposite \: sides \: equal \\ let \: x \: be \: a \: side \: \\ then \: other \: side = x + 4 \\so \: 2(x + x + 4) = 40 \\ 2(2x + 4) = 40 \\ 2x + 4 = 20 \\ 2x = 16 \\ x = 8 \\ x + 4 = 12$

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