What will the Area of Field? If
Answer: (1) 19200 sq.m.
The perimeter of a rectangular field = 640 m.
The ratio of length & breadth = 3 : 1
Then, Let be the length of the rectangle field is 3X and breadth of the rectangle field is X.
Perimeter of rectangle = 2 ( length + breadth)
According to question,
2 (3X + X) = 640
2 x 4X = 640
8X = 640
X = 640/8
X = 80 m
Thus, the length = 80 x 3 = 240 m and breadth = 80 m
Area of rectangle = Length x breadth
Then, the area of the rectangle field = 240 x 80
= 19200 sq. m.
Hence, the answer is (1) 19200 sq.m.