CBSE Class 9 Answered
A hemispherical dome of a fort needs to be polished. If the circumference of the base of the dome is 27.72 m, find the cost of polishing it at the rate of Rs 25 per 1000 cm2.
Asked by Topperlearning User | 18 Oct, 2017, 03:10: PM
Expert Answer
Let r= radius of the base of a hemispherical tomb.
Circumference of the base = 27.72 m=2772 cm
Cost of polishing 1000 cm2 = Rs 25
Therefore, cost of polishing 1222452 cm2 = Rs
= Rs 30561.30
Answered by | 18 Oct, 2017, 05:10: PM
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