The area of a rectangle is thrice that of a square. The

Home » Aptitude » Mensuration » Question

The area of a rectangle is thrice that of a square. The length of the rectangle is 20 cm and the breadth of the rectangle is 3/2 times that of the side of the square. The side of the square, (in cm) is

Using Rule 9 and 10,
Side of a square = x cm
∴ Area of rectangle = 3 × area of square

⇒ 20 ×	3	x = 3 × x²
	2

⇒ x =	20 × 3	= 10 cm
	2 × 3