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Hey, I'm really confused and have no idea. Could someone please complete one of these questions and take me through it. Many thanks
Calculate the Radius of each Sphere:
1. Volume of Sphere -= 250cm^3
2. Vol = 60cm^3
3. Vol = 154cm^3
We need to use the volume of a sphere formula:
where r is the radius.
We have to re-arrange this formula, solve it for r:
One step at a time:
take the cube root of both sides:
So now we have a formula for the radius r when V is known:
Now using your specific numbers:
1. V = 250 cm^3
From the formula:
(approximately)
I assume you are allowed to use a calculator to work out these problems.
Last edited by polylog (2006-10-16 09:40:08)
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