A hemispherical bowl has a 21 cm radius. It is to be painted inside as well as outside. The cost of painting it at the rate of ₹0.05 per cm2 and assuming that the thickness of the bowl is negligible, is:(Use \(\pi=\frac{22}{7}\))
1
₹410.10
2
₹188.30
3
₹277.20
4
₹388.20