Question

a circular field is surrounded a path 2 metre wide if the diameter of the field is 16 find the area of the circular field also find the cost of levelling the path at rupees 10 per metre square(π=3.14 take )​

Answer 1

Answer:

Cost of leveling the path is ₹8164

Step-by-step explanation:

Are of the inner circle = πr²

Where,

d (diameter) = 16 Or, r (radius) = 16/2 = 8m

So, are of the circle = 3.14× 8²

= 200.96m²

Area of the outer circle is πr²

Where,

Radius will be 16 + 2 = 18

So, Area = 3.14 × 18² = 1,017.36m²

Area of the path :

Area of the outer circle - Area of the inner circle

= 1,017.36 - 200.96

= 816.4m²

Now, it's given that the rate of leveling the the path is ₹10per metre

So, Cost of leveling 816.4m² of path is

= 816.4 × 10

= ₹8164 ans.