The radius of a hemisphere is 14 cm. What is the cost of painting the outer curved surface of the hemisphere at the rate of ₹45 per cm ?(Take $π =\frac{22}{7}$)

₹55440

 We know that,

Surface area of a hemisphere = 2πr²

We have,

Radius of hemisphere = 14 cm.

So, outer surface area of hemisphere = 2 × \(\frac{22}{7}\) × 14²  = 1232 cm²

The cost of painting = 1232 × 45 = ₹55440