Question

a wire is bent in the form of an equilateral triangle of each side 20 cm if the same wire is bent in the form of a square,find the side of the square

Answer 1

Perimeter of triangle = perimeter of square
3 × side of triangle = 4 × side of square
3 × 20 = 4 × side of square
60/4 = side of square
Side of square = 15 cm

Answer 2

If each side of the equilateral triangle is 20cm
Then it's perimeter will be 3×20cm=60cm
But, perimeter of triangle =perimeter of square
Therefore,the perimeter of square will be 60cm
So each side will be 60/4cm=15cm