There is a large cone with a diameter of 14 m and a height of 12 m. It is being filled with
water at a rate of 2 m3 in every 20 seconds. How long will it take to fill the cone?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 6160 sec.
Radius = 14/2 = 7 cm
Height = 12 m
Volume of the cone = πr2h
⇒ × × 72 × 12 = 616 m3
Filling rate = 2 m3 per 20 seconds
Rate = 2/20 = 0.1 m3/sec
Time = = 6160 sec