Find the cost of levelling a ground which is in the shape of a sector with angle `40^(@)` and radius 63 m at the rate of Rs. 15 per square metre.
The following steps are involved in solving the above problem. Arrange them in sequential order.
(A)The are of the sector `=(theta)/(360^(@))pir^(2)`
(B) Cost of levelling the ground per square metre = Rs. 15
(C) `therefore "The area of the ground"=(40^(@))/(360^(@))xx(22)/(7)xx63xx63=1386m^(2)`
(D) Cost levelling `1386m^(2)=1386xx15="Rs."20,790`

Options

A. ADBC
B. ABCD
C. CABD
D. ACBD

Answer

D