Find the cost of fencing a field which is in the shape of sector with angle `90^(@)` and radius 56 m at the rate of Rs.5 per metre.
The following steps are involved in solving the above problem. Arrange them in sequential order.
(A) `therefore` The cost fencing = Perimeter`xx` Rate per metre`=200xxRs.5`
(B) The perimeter of the sector
`=(theta^(@))/(360^(@))xx2pir+2r=(90^(@))/(360^(@))xx2xx(22)/(7)xx56+2xx56`.
(C) The perimeter of the sector = 200 m
(D) The cost of fencing = Rs. 1000

Options

A. CDAB
B. ABCD
C. BCAD
D. CBAD

Answer

C