Water is flowing into an inverted cone, of diameter and height
30 cm, at a rate of 4 litres per minute. How long, in seconds,
will it take to fill the cone?
plzz help me
Answers
Answered by
26
Answer:
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Hi , volume of cone = 1/3 * pi * (15)^2 * 30 = 7065 cubic cm
Rate of flow is 4000 cubic cm per minute
So time taken to fill the cone = 7065/4000 = 1.766 minute OR 1 min 45 second
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Answered by
3
Answer:
106 seconds
Step-by-step explanation:
volume of cone = 1/3 * pi * r^2 * h
= 1/3 * pi * 15^2 * 30
= 2250 pi = 7068.58 cm^3
Therefore,
4 litres * 1000 cm^3 = 4000 cm^3
2250pi/4000 = 1.77 min
1.77 min * 60 sec = 106.03 sec = 106 sec (3 sf)
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