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Mathematics 12 Online
OpenStudy (anonymous):

NEED HELP!!! GIVING MEDALS!!!!! True or False? All points on a sphere are equidistant from the center of the sphere.

OpenStudy (uglyturtle):

True.

OpenStudy (uglyturtle):

http://www.mathsisfun.com/geometry/sphere.html

OpenStudy (anonymous):

Thanks :) And I just got you to 50 Points :D

OpenStudy (tfht):

true just think of it as the radius is the same length all throughout the sphere

OpenStudy (uglyturtle):

Thank you :D

OpenStudy (tfht):

so if you had a random point as the starting part of the radius to the center, it would be equidistant

OpenStudy (uglyturtle):

As tfht said.

OpenStudy (anonymous):

And can you help with another one?

OpenStudy (tfht):

i can

OpenStudy (anonymous):

If the ratio of similitude between two similar pyramids is 1:2, what is the ratio of their volumes?

OpenStudy (anonymous):

Thanks but i think the answer is 1:8? Am I correct? :)

OpenStudy (tfht):

um i actually dont know on that one... sorry @UglyTurtle can you help?

OpenStudy (uglyturtle):

Sorry I was having dinner. Let's see if I can help.

OpenStudy (uglyturtle):

Hmm not too sure. This should help though. http://www.cambridge.edu.au/downloads/education/extra/209/PageProofs/Advanced%20General%20Maths/Ch%209.pdf

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