Question

the outer and inner diameters of a hemispherical bowl 17cm and 15 cm find the cost of polishing it over at 25 Paise per cm2​

Answer 1

Answer:

The polishing will be to the outer bowl. Therefore we have to find curved area of hema spherical bowl

curved area=2πrsqaure

=2*22/7*15*15=1413.71

cost for polishing=1413.71*25=35342.75paise