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Question

The perimeter of a rectangle is 36 cm. If length is 10cm,then its area is ________cm2


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Solution

Perimeter of the rectangle =36cm

2×(length+breadth)=36

length+breadth=362=18

It is given that length=10cm

Hence , 10+breadth=18

breadth=18-10

breadth=8cm

Now, Area of rectangle =length×breadth

=10×8=80cm2

Hence, area of rectangle = 80cm2


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