NCERT Exercise 11.4 Q8 - Surface Areas and Volumes
Question: A dome of a building is in the form of a hemisphere. From inside, it was white-washed at ₹4989.60. If white-washing costs ₹20 per m², find (i) inside surface area of the dome, (ii) volume of air inside the dome.
Answer: (i) Inside surface area = 249.48 m², (ii) volume of air ≈ 523.9 m³.
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