SOLUTION: How many metal doorstops 15 cm by 10 cm by 5 cm can be cast from a spherical ball of metal of diameter 400 mm?

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Question 1163442: How many metal doorstops 15 cm by 10 cm by 5 cm can be cast from a spherical ball of metal of diameter 400 mm?
Answer by ikleyn(52786) About Me  (Show Source):
You can put this solution on YOUR website!
.

First, calculate the volume of a sphere with the radius r = 20 cm  V = %284%2F3%29%2Api%2Ar%5E3, in cubic centimeters.


Next calculate the value under the question  V%2F%2815%2A10%2A5%29.


Last step is to round to the smaller closest integer number.


Happy calculations (!)