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Mathematics

Grade9

Easy

Question

The formula to calculate surface area of a sphere is _______________

$\frac{4}{3} π r^{3}$
$4 π r^{2}$
$\frac{1}{3} π r^{3}$
$π r^{2}$

hint Hint:

The Surface area of the sphere is given by $4 cross times straight pi cross times left parenthesis radius right parenthesis squared$

The correct answer is: $4 pi r squared$

The formula to calculate surface area of a sphere is 4πr ²

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