5 person will live in a tent. If each person requires 16m2 of floor area and 100 m3 space for air then the height of the cone of smallest size to accommodate those persons would be:
Answer: (3) 18.75 m
5 persons will be required = 5 x 16
Then, Pai x r2 = 80
And 5 persons will need 100 x 5m3
Then, pai x r2h/3 = 500
Therefore, h = 500 x 3/pai x r2 = 500 x 3/5 x 16
Hence, the answer is (3) 18.75 m.