Question

The dome of a building is in the form of a hemisphere. Its radius is 63 dm. Find the cost of painting it at the rate of Rs. 2 per sq. m.

Answer 1

here is your answer hope it will be useful to u

Answer 2

Answer :

Surface area of a hemisphere = 2πr²

Given,

dome of a building is in the form of a hemisphere. Its radius is 63 dm.

1 dm = 0.1m

Thus, 63 dm = 6.3 m

Surface area of the dome = 2 × (22/7) × (6.3)^2= 249.48 m²

Cost of painiting it at Rs. 2 per sq. m. = 249.48 × 2 = Rs. 498.96