The area of a rectangle is 729 m2 and its length is 9 times of its breath. The perimeter of the rectangle is:-
Answer & explanation
Correct answer: option 2
Length : Breath = 9 : 1
Area of rectangle = l × b = 9R × 1R = 9R2 = 729
1R = 9
Now,
Perimeter = 2 (l + b) = 2 (10R) = 2 (90) = 180 cm