Question

The diameter of a circular field is 70 m. The owner wants to fence the field and plough it for cultivation. Find his total cost of fencing costs him Rs 300 per metre and ploughing costs Rs 2 per square metre​

Answer 1

The total cost of fencing is Rs 66000 and the cost of ploughing is Rs 7700 .

Explanation:

Given : The diameter of a circular field is 70 m.

i.e. radius = 35 m  (Radius is half of diameter)

Circumference of circular field  = $\pi\times diameter$

=$(\dfrac{22}{7})\times70=220\ m$

Rate of fencing = Rs 300 per metre

Total cost of fencing costs him = (Rate of fencing)x (Circumference of circular field )

= (300) x(220) = Rs 66000

Area of circular field =  $\pi (radius)^2$

$=\dfrac{22}{7}\times(35)^2=3850\ \text{square meter}$

Rate of ploughing = Rs 2 per square metre​

Total Cost of ploughing  = (Rate of ploughing ) x (Area of circular field)

= 2 x 3850 = Rs 7700

Hence, the total cost of fencing is Rs 66000 and the cost of ploughing is Rs 7700 .

# Learn more :

Find the total cost of wooden fencing around a circular garden of diameter 28m.if 1m of fencing cost rs300

https://brainly.in/question/4074188

Answer 2

Answer:

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Step-by-step explanation:

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