Question

the length and breadth of a rectangle are 40cm and 10cm respectively. find the perimeter of a square of area equal to that of the rectangle

Answer 1

2 (l+b)
2 (40+10)
2×50=100cm is ur answer dude

Answer 2

Area of rectangle = l*b
= 40*10
=400 square cm.

Area of square = 400 sq. cm
Side * Side = 400
Side of square = 20cm

Perimeter of square = 4 * side
= 4 * 20
= 80 cm