Read the following text carefully and answer the questions that follow:
Vinod and Basant have an adventure tourism business in Rishikesh. They have a resort in Rishikesh but now they are planning to build some tent houses too. The newly built tent house will have all the basic amenities, and it will attract the young tourists coming for adventure. Their conical tent is 9 m high, and the radius of its base is 12 m.
a. What is the cost of the canvas required to make it, if 1 m2 canvas costs ₹ 10?
b. How many persons can be accommodated in the tent, if each person requires 2 m2 on the ground?
c. How many persons can be accommodated in the tent, if each person requires 15 m3 of space to breathe in?