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Question

The diagonal of a square is 15 m; find the length of its one side and perimeter.

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Solution

Diagonal of square =15 m

Let side of square =a

a2+a2=(15)2

2a2=225

a2=2252

a2=112.50

a=112.50

a=10.6 m

Perimeter =4×a

=10.6×4

=42.4 m

10.6 m, 42.4 m


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