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]