Question

find the length of rectangle given perimeter=13 and width =8 cm
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Answer 1

Answer:

perimeter = 2(l+b)

13= 2(l+8)

13-8= 2l

5=2l

l=5/2

l=2.5

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Answer 2

Answer:

perimeter =2(l+b)

13=2(x+8)

13/2=x+8

13/2-8=x

6.5-8=x

1.5=x

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