Question

The radius of a circular field is 140 m it is surrounded by a part of uniform width of 7m find the area of the path and the cost of Levelling it at Rs.5 per square metre

Answer 1

Answer:

Step-by-step explanation:

Given,

radius of circular park = 140 cm

Area of park = πr²

=> 22/7×140×140

=> 61600

Radius of park along with path = (140+7) = 147m

Area of park = πR²

=> 22/7×147×147

=> 67914

Area of path = ( R - r )

=> 67914-61600

=> 6314 m²

cost of levelling the path = (6314×5) = 31570

The area of path is 6315 m² and the cost of levelling the path is Rs. 35170