(i) Perimeter of a rectangle = 2 x (length + breadth)
⇒ 500 m = 2x(150 m + breadth)
⇒ 250 m – 150 m = breadth
∴ breadth = 100 m
(ii) Area of rectangular field = length x breadth
= 150 m x 100 m = 15000 m²
(iii) Cost of ploughing the field at the rate of
= Rs 1.20 per square m² = area of the field x rate of ploughing = 15000 m² x Rs 1.20 per square metre = Rs 15000 x 1.20 = Rs 18000