Find the area of the square whose side is equal to the diagonal of a rectangle of length 3 cm and breadth 4 cm.

Given length of the rectangle = 3 cm

Breadth of the rectangle = 4 cm

Then, the diagonal of the rectangle  $D = 32 + 42 = 25 = 5$

Then, it implies side of square = 5 cm

We know that Area of square = S x S = 5 x 5 = 25 sq.cm.