Question

a hemispherical bowl made up of brass has diameter 10.5 cm. find the cost of tin plating it on inside at the rate of rs 4 per 100 cm square​

Answer 1

Answer

d=10.5cm

r =  d/2 =  10.5/2  = 5.25

Curved surface area of hemisphere=

=  

=

Cost of tin plating

=16Rs

Cost of tin plating =  100/16 Rs

Cost of tin plating  =  (100/16) X 173.25 = 27.72Rs

Cost of tin plating=27.72Rs

Answer 2

Answer:

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