Question

the cost of fencing of a circular field at rate of Rs 24 per metre is rupees 5282 field is to be plugged @ 0.50 per meters square find the cost of living in the field use pie =22/7

Answer 1

Lenth of wire =5280÷24=220.Answer:

So, Circumference=220

Radius=35cm.nowArea=22÷7×35×35=3850cm sq.so,cost=3850×0.5=1925

Answer 2

Answer:

Length of the fence (in metres) = Total cost / Rate = 5280/24 = 220

So, circumference of the field = 220 m

Therefore, if r metres is the radius of the field, then

2πr = 220

or, 2 × 22/7× r = 220

or, r = (220 × 7)/(2 × 22) = 35

i.e., radius of the field is 35 m.

Therefore, area of the field = πr2 = 22/7 × 35 × 35 m2 = 22 × 5 × 35 m2

Now, cost of ploughing 1 m2 of the field = Rs 0.50

So, total cost of ploughing the field = Rs 22 × 5 × 35 × 0.50 = Rs 1925

Step-by-step explanation: