The length of a rectangle is 4 times of its breadth. If the area of the rectangle is 576 cm2, then what is the perimeter of this rectangle ?
Answer & explanation
Correct answer: option 4
Here,
Length = 4 x Breadth
⇒ Area of Rectangle = L x B = 576 cm2
⇒ 4B x B = 576 cm2
⇒ 4\( { B}^{ 2} \) = 576
⇒ \( { B}^{ 2} \) = 144
⇒ B = 12 cm
Perimeter of Rectangle = 2(L + B) = 2 (48 + 12) = 2 x 60 = 120cm