Question

A circular field of diameter 42cm has a circular path of width 3.5cm round and outside the field. Find the area of the path​

Answer 1

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

Answer 2

Answer:

500.5

Step-by-step explanation:

radius 21

outside radius 24.5 cm

so total area pie(24.5 square- 21 square)

=500.5