Question

A circular park, diameter of 42m, has a path 3.5 m wide
passing round it from outside. Find the cost of gravelling
the path at Rs. 25 per m2.

STEP BY STEP​

Answer 1

Answer:

Step-by-step explanation:

Internal Radius = 21 m, External Radius =21+3.5=24.5 m

Area of path = π(24.5)  

2

−π(21)  

2

 

⇒π[(24.5)  

2

−(21)  

2

]

=500.5

Cost of travelling =500.5×4=Rs.2002