Question

square garden is 405 metre long find the cost of ploughing it at the rate of 10 paise per square metre find also the cost of fencing it at 2 paise per metre​

Answer 1

cost of ploughing is 1 640 250 paise or 16 402.5 rupee

explanation : the area of the square garden is 405^2 which is 164 025 m^2. so the cost of ploughing it is 164 025 × 10 paise, which is 1 640 250 paise, or 16 402.5 rupee

cost of fencing is 3 240 paise or 32.4 rupee

explanation : the perimeter of the garden is 405 × 4 which is 1 620 m. so the cost of fencing is 1 620 × 2 paise, which is 3 240 paise, or 32.4 rupee

hope it helps =)