It is a case study. A group of students visited the Hyderabad city and
visited this monument. There they observed four cylindrical towers with the
top in shape of cone. These towers were painted by the labourers.
Authorities paid the amount for all maintenance to labourers at the rates agreed upon. The base is 10m in diameter and 20m high. The conical part has slant height of 5m.
The following questions to be answered using this information:
Q13.1. What is the area of one cylindrical part painted?
a) 250π sq m b) 440 π sq m c) 400 π sq m d)200 π sq m
Q13.2. What is the area of 4 conical part painted?
a) 150π m b) 50 sq m c) 314.2 sq m d)200 π sq m
Q13.3. What is the volume of air in the cylindrical parts?
a) 250π sq m b) 500π sq m c) 400 π sq m d)500 π cu.m
Q13.4 What is the total cost paid in Rupees for the conical part polished at
the rate of Rs. 0.05 per sq cm?
a) 15710 b) 187100 c) 1571000 d)157100
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Answer A, Q 13 answer answers A,
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