SOLUTION: inverted right cone with radius 4 inches and height 12 inches. it is partially filled with water having a radius r and height of 9 inches. what represents the volume of water

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Question 867306: inverted right cone with radius 4 inches and height 12 inches. it is partially filled with water having a radius r and height of 9 inches. what represents the volume of water
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
The radius at any level and the distance from center to tip are in proportion. Make a drawing. See then that 4%2F12=r%2F9; this means radius at the current fulled level for this inverted cone is r=%284%2F12%299=%281%2F3%299=3.

Volume formula for a cone is %281%2F3%29h%2Api%2Ar%5E2;
You know these now:
h=9, and r=3;
.
.
...The FORMULA!