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Question

Find the side of a square whose perimeter is 30 cm.

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Solution

A square has four equal sides.
So perimeter of a square p=4a
Where a is he length of any one side of the square.
Given p=30cm
4a=30
a=304=7.5cm
Area of a square A=a2
A=(7.5)2=56.25
Therefore,
We get =56.25cm2

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