Question

a wire is bent into the shape of an equal and triangle of side 12cm then it is stretched open and when into a square find the area of the square

Answer 1

side of triangle=12cm
perimeter of triangle=12(3)cm
=36cm
length of wire =perimeter of triangle=perimeter of square=36cm
side of square=36/4=9cm
area of square=side×side
=9×9=81cm2