Question

The length of a rectangle is 8 cm and its area is 48 cm². The perimeter of the rectangle is

(a) 14 cm (b) 24 cm (c) 12 cm (d) 28 cm

Answer 1

Let a and b be the length and breadth of the rectangle respectively. Then
Area of the rectangle = ab
$\text{⇒}$ 48 = a $\text{×}$ 8 (∵ b = 8 cm)
$\text{⇒}$ a = 6 cm
Perimeter of the rectangle = 2(a + b) = 2( 6 + 8) = 28 cm
Hence, the correct option is (d).