The ratio between the length and the breadth of a rectangular plot is 7 : 5. If the perimeter of the plot is 360 metres, what is its area? Choose the correct choice from the following answers.
A) 1320 sq.metres B) 4260 sq.metres C) 6870 sq.metres D) 7875 sq.metres E) None of these
Let the length and breadth be 7x and 5x respectively.   Then, P = 2(7x + 5x) = 360 â‡’ x = 15   Area = 7 Ã— 15 Ã— 5 Ã— 15 = 7875 sq.m.   Answer 7875 sq.metres
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The ratio between the length and the breadth of a rectangular plot is 7 : 5. If the perimeter of the plot is 360 metres, what is its area?