Given, side of the square = 40 cm
So, area of the square = side2
= 40 x 40
= 1600 cm2
Given, breadth of the rectangle = 25 cm
So, area of the rectangle
= length × breadth
= length × 25 cm
Given, area of the square = area of the rectangle
⇒ 1600 cm2 = length × 25 cm
⇒ length = 160025 = 64 cm.
Therefore, length of the rectangle is 64 cm .