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Can you please help me out with a question
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Can you please help me out with a question

User Jesse Fulton
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1 Answer

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So, the surface area of a sphere is


A\text{ = 4}\pi r^2

so, you have the value of A, and the value of pi, now you want to resolve for r


615.752\operatorname{mm}^2\text{ = }4\pi r^2
\sqrt[]{(\frac{615.752\operatorname{mm}}{4\cdot\pi})}\text{ = r}

Then, r = 6.9999999mm... and the ask you to approximate to a whole number

the answer is r = 7mm

User CountZero
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