Practicing Success
The perimeter of a rectangular field is 480 m. The ratio between the length and the breadth of the field is 2 : 1. Find the area of the field. |
12,400 m2 12,800 m2 12,850 m2 13,800 m2 |
12,800 m2 |
The correct answer is Option (2) → 12,800 m2
Length be, L and Breadth be, B Perimeter = 2L + 2B = 480 L+B = 240 Also, L : B :: 2 : 1 L = 2B Thus, 2B+B = 3B = 240 B = 80 L = 160 Area of the field = LB = 160 × 80 = 12800 |