Question

If surface of a sphere is 676 pie cm2 then find it radius

Answer 1

given

surface area :

we know that:

surface area of sphere = 4πr^2

$676\pi = 4\pi \: r {}^{2}$

$r = \sqrt{ \frac{676\pi}{4\pi} }$

$r = \sqrt{169}$

$r = 13cm$

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