Question

The Cost of fencing a circular field at rate of Rs. 24/-per meter is Rs. 5280-. The field

is to be ploughed at rate of Rs. 0.50 per m. Find the cost of ploughing the

field. (Take n =22/7

​

Answer 1

fencing of field = circumference of field = 2πr

Now cost of fencing 1m= rs.24

and cost of fencing total length = rs.5280

so length of fence = 5280/24 = 220 m ( circumference)

now for radius of field as r

2πr= 220

2*22/7*r = 220

so r = 220*7 / 2*22

and r = 35 m

now , total area to be ploughed = area of field = πr²

so total area to be ploughed = 22/7*35²

= 3850 m²

now cost of ploughing per m² = rs. 0.50

so cost of ploughing 3850 m² = 3850 * 0.50

= rs. 1925.

so rs. 1925 is your answer !!!!

Answer 2

Answer:

hi

i am also ff player

fencing of field = circumference of field = 2πr

Now cost of fencing 1m= rs.24

and cost of fencing total length = rs.5280

so length of fence = 5280/24 = 220 m ( circumference)

now for radius of field as r

2πr= 220

2*22/7*r = 220

so r = 220*7 / 2*22

and r = 35 m

now , total area to be ploughed = area of field = πr²

so total area to be ploughed = 22/7*35²

= 3850 m²

now cost of ploughing per m² = rs. 0.50

so cost of ploughing 3850 m² = 3850 * 0.50

= rs. 1925.

so rs. 1925 is your answer !!!!

Step-by-step explanation:

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