Question

Gol Gumbaz shape( Dome)

Gol gumbaz has a diameter of 124 meter. Its height is 51 meter.

1.Find its inner curved surface area

2.The cost of plastering this CSA at the rate of ₹ 40 per meter square.
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Answer 1

Answer:

Given a metal pipe is 77 cm long and inner diameter is 4 cm and outer diameter is 4.4 cm

Then radius of inner side =

2

4

=2 cm

Then inner curved surface area=2πrh

=2×

7

22

×2×77=88×11

=968cm

2