Question

The cost of fencing a circular field at the rate of Rs. 24 per metre is Rs. 5280.00. The field to be ploughed at the rate of Rs. 2 per metre square. Find the cost of ploughing the field.

Answer 1

Hlo friend.. Cutiepie Here..

Here is ur answer :

Cost of fencing a circular field at the rate of Rs. 24 per metre is Rs. 5280.00.


Circumference of circle =
$= \frac{5280}{24}$

$= 220$

$2\pi r = 220$


$2 \times \frac{22}{7} \times r = 220$


$r = 220 \times \frac{1}{2} \times \frac{7}{22}$


$r = 35$


Area of circle =
$\pi {r}^{2}$

$= \frac{22}{7} \times 35 \times 35$


$= 110 \times 35$


$= 3850 \: {m}^{2}$

1 m² = Rs 2

3850 m² = Rs 2 × 3850

= Rs 7700



HOPE IT HELPS YOU .

REGARDS
@sunita

Answer 2

, right answe...................rrrr