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JulsSmile [24]
3 years ago
8

A cone-shaped coffee filter of radius 6 cm and depth 10 cm contains water, which drips out through a hole at the bottom at a con

stant rate of 1.5 cm3 per second. (a) If the filter starts out full, how long does it take to empty
Mathematics
1 answer:
Dimas [21]3 years ago
6 0

Answer:

It takes 251.33 seconds to filter out full.      

Step-by-step explanation:

We are given the following in the question:

Radius of cone, r = 6 cm

Depth of cone,h = 10 cm

Volume of flow rate =

\dfrac{dv}{dt} = 1.5~ cm^3/s

Volume of cone-shaped coffee filter =

\dfrac{1}{3}\pi r^2 h

The volume of the cone when water start drips out =

\dfrac{1}{3}\pi r^2 h - 1.5t

Since, when the cone will be empty the volume of cone will be zero, thus we can write,

0 = \dfrac{1}{3}\pi r^2 h - 1.5t

Putting all the values, we get,

0 = \dfrac{1}{3}\pi (6)^2 (10) - 1.5t\\\\t = \dfrac{1}{1.5}\times \dfrac{1}{3}(3.14)(6)^2(10)\\\\t = 251.33 \text{ seconds}

Thus, it takes 251.33 seconds to filter out full.

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