Question

hemispherical bowl made of brass has inner diameter 10.5 cm. Find the cost of tin plating it on the inside at the rate of Rs.4 per 100 cm2. *
2 points
Rs.6.93
Rs.6.50
Rs.6.00​

Answer 1

Answer:

Rs.6.93

Step-by-step explanation:

curved surface ares of hemisphere = 2*22/7*r^2

r=10.5/2

 = 5.25

2*22/7*5.25*5.25

=173.25cm^2

cost = 173.25/100*4

       =1.7325*4

       =Rs.6.93