Question

Justin used the work to shown to estimate the radius of a sphere that has a surface area of 113.04 m2. Is he correct? Explain. S = 4πr 113.04 = 4(3.14)r 113.04 = 12.56r 9 = r

Answer 1

Justin is wrong because the radius is not squared, the actual radius is r = 3m.

Is Justin correct?

First, remember that for a sphere of radius R the surface is:

$S = 4pi*r^2$

So you already can see that Justin is wrong, because the radius in his expression is not squared.

Now to be complete, let's find the radius:

$113.04 m^2 = 4*(3.14)*r^2\\\\\sqrt{\frac{113.04 m^2}{4*3.14} } = r = 3m$

If you want to learn more about spheres:

brainly.com/question/10171109

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