The diameters of the top and the bottom portions of a bucket are 42 cm and 28 cm. If the height of the bucket is 24 cm, then find the cost of painting its outer surface at the rate of 5 paise/`cm^(2)`.
A. Rs. 158.25
B. Rs. 172.45
C. Rs. 168.30
D. Rs. 164.20
