Question

A circular park,42m is diameter,has a path 3.5m wide running around it on the outside.find the cost of gravelling the path at rs.4 per m^2

Answer 1

radius of the park without path
= 42/2
= 21

radius of the park with path
= 21 + 3.5
= 24.5 m

area of the path
= 22/7 ( 24.5^2 - 21^2 )
= 500.5

cost = 4 x 500.5 = Rs 2002

Answer 2

Answer:

Step-by-step explanation:

radius of the park without path

= 42/2

= 21

radius of the park with path

= 21 + 3.5

= 24.5 m

area of the path

= 22/7 ( 24.5^2 - 21^2 )

= 500.5

cost = 4 x 500.5 = Rs 2002