Question

the length and breadth of rectangular field is 60 CM and 50cm respectively. find the cost of

a) ploughing the field at the rate of Rs 20per sq. m

b) fencing the field at the rate of Rs 5 per m​


please answer the question

Answer 1

Answer:

cost of ploughing is Rs. 6

cost of fencing is Rs. 11

Step-by-step explanation:

length = 60cm but cost is given in m². so convert it in to m. l = 0.6m since 100cm = 1m

60cm = 60× 1/100.

b = 0.5m

for ploughing we need to find the area of the rectangular field. so area = l × b = 0.6m× 0.5

=0.3m²

cost of 1m² = Rs. 20

cost of 0.3m² = 0.3 × 20 = Rs. 6.0

for fencing we need to find perimeter = 2(l + b)

= 2(0.6 + 0.5) = 2(1.1) = 2.2m

cost of fencing Rs. 5 for 1m

cost of fencing for 2.2 m = 2.2 × 5 = Rs. 11.0