[问答题]
A conical funnel is u
p;vpe,,r0(r aokyo) ised to add water to a
7 c8w6unwdh+,l1o lffd* ,sw1h 8top iscientific experiment. The funnel initially contains 3 L of water
lwf+slo16p1 c nw* uhtw,fo dd,8h8i7, and the water flows out of the funnel at a rate of 40 mL per minute.
1.Determine a function for the volume V (in millilitres) of water remaining in the funnel after t minutes.
2.If there is V mL of water in the funnel, show that the height of the water can be expressed as
h(V)=$3^3\sqrt{\frac{V}{π}}$ cm.
3.Find the composite function $h∘V$, and interpret what it means in the context of this question.
4.Find $(h∘V)(15)$ and explain what it means in the context of this question.
