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Question

The perimeter of a square is $$40$$ cm. A rectangle of length $$20$$ cm has the same area as that of the square. Find the breadth of rectangle. 


Solution

Perimeter of a square $$4a=40\Rightarrow a=10cm$$
$$Area=a^2=100cm^2$$
Area of Rectangle $$=length\times breadth=100$$
$$ \Rightarrow B=100/20=5cm$$

Mathematics

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