The sides of a rectangular plot are in the ratio 5:4 and

Home » Aptitude » Mensuration » Question

The sides of a rectangular plot are in the ratio 5:4 and its area is equal to 500 sq.m. The perimeter of the plot is :

Using Rule 9,
Area of rectangle = l × b
∴ 5x × 4x = 500 sq.m.
or, 20x² = 500 sq.m.

⇒ x² =	500	= 25
	20

⇒ x = 5
∴ l = 5 × 5 = 25 m
⇒ = 5 × 4 = 20 m
∴ Perimeter = 2 (l + b)m
= 2 (25 + 20) = 2 × 45 = 90 m