The area of a rectangle is 343 m2 and its length is 7 times of its breath. The perimeter of the rectangle is:-
Answer & explanation
Correct answer: option 3
Length : Breath = 7 : 1
Area of rectangle = l × b = 7R × 1R = 7R2 = 343
1R = 7
Now,
Perimeter = 2 (l + b) = 2 (8R) = 2 (56) = 112 cm