Question

20. Five persons will live in a tent. If each person requires 16 m² of floor area and 100 mº space for air
then find the required height of the cone of the smallest size to accommodate those persons.
21. A solid object in the shape of a double cone is traced by rotating a right-angled triangle of smaller
sides 12 cm and 5 cm about the hypotenuse of the triangle. Find the cost (to the nearest rupee) of
painting its surface at the rate of 3.50 per
cm?​

Answer 1

Step-by-step explanation:

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