Question

A field is in the form of a circle. cost of ploughing the field is rs.3.50 per m^2.if the circumference of the circular field is 176m .find the total cost of ploughing the field​

Answer 1

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Answer 2

Question:

A field is in the form of a circle. cost of ploughing the field is rs.3.50 per m^2.if the circumference of the circular field is 176m .find the total cost of ploughing the field​

Circumference of the field: $2\pi r$

Circumference of the field given here: 176 m

$2\pi r$ = 176 m

2 x 22/7 x r = 176 m

r = 176 x 7 / 2 x 22

r = 28

We can now find the area using this radius.

Area of field:  $\pi r^{2}$

                    = 22/7 x 28 x 28

                    = 2464 $m^{2}$

∴ Total cost of ploughing field = 2464 X Rs. 3.50

                                                  = Rs. 8624