SOLUTION: a conical glass can hold 150ml of liquid when full what is the diameter of the top of the glass? Glass hight 9cm Thank you

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Question 964659: a conical glass can hold 150ml of liquid when full what is the diameter of the top of the glass? Glass hight 9cm
Thank you
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
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V=volume; r=radius; h=height
V=%281%2F3%29%28pi%29r%5E2h
%283V%29%2F%28%28pi%29h%29=r%5E2
r=sqrt%28%283V%29%2F%28%28pi%29h%29%29
r=sqrt%28%283%28150ml%29%29%2F%28%28pi%299cm%29%29
r=sqrt%28450cm%5E3%2F28.3cm%29
r=sqrt%2815.9cm%5E2%29
r=3.99cm
d=2r=2%283.99cm%29=7.98cm
ANSWER: Diameter of the top of the glass is 7.98cm.