11. How much money needed to buy the cloth

Nisha and her friends went to a picnic. They planned to make a tent in the shape of a hemisphere of diameter 56 $cm$. The cost of the cloth per $100 \ cm^2$ is $₹$9. Find how much money is needed to buy the cloth for the hemispherical tent?

 

 

Amount needed to buy the cloth for the hemispherical tent $=$

[Note: Round off your cost to the whole number]