Question

The done of a building is in the form of a hemisphere of diameter 49. find the cost of painting . it at the rate of RS 9 per M .​

Answer 1

Step-by-step explanation:

Required cost =2πr

2×Rs.2 ........ Dome has a shape of a hemisphere

={2×

7

22

×6.3

2

×2}=Rs.498.96 [∵10dm=1m⟹63 dm=6.3 m]