Question

The diagonal of a square is 15 cm .Find the length of its side.​

Answer 1

Step-by-step explanation:

length of side=15cm

Therefore, Area of the square =15²=225cm²

Hence its diagonals are of length =_/225=(225)½=15cm

Thus the diagonals will be of length 15cm.

You can also write (15×15)½=15cm(length of diagonals).

Since, the diagonals of a square are equal hence both the diagonals will be 15cm

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Answer 2

Answer

4a=4 x 10.6=42.4

Step-by-step explanation:

a^2+a^2=15^2

2a^2=225

a^2=112.5

a=10.6 (side of square )

perimeter of square=4a=4 x 10.6=42.4

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