stevecowall
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My solution: 4πr^2 = 4/3πr^3 but the question say it has to be numerical value. And that is why I got stuck at.
Thanks,
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Finding Area of Sphere
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Thanks,
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"numerically equal" usually means only to ignore the units.
\(\displaystyle 4\pi r^2 = \frac{4}{3}\pi r^{3}\)
That's great. Now, solve for a non-useless 'r'.
\(\displaystyle \pi r^2 = \frac{1}{3}\pi r^{3}\)
\(\displaystyle r^2 = \frac{1}{3} r^{3}\)
\(\displaystyle r \ne 0\), since that is boring.
\(\displaystyle 1 = \frac{1}{3} r\)
Are we close?
\(\displaystyle 4\pi r^2 = \frac{4}{3}\pi r^{3}\)
That's great. Now, solve for a non-useless 'r'.
\(\displaystyle \pi r^2 = \frac{1}{3}\pi r^{3}\)
\(\displaystyle r^2 = \frac{1}{3} r^{3}\)
\(\displaystyle r \ne 0\), since that is boring.
\(\displaystyle 1 = \frac{1}{3} r\)
Are we close?