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Mathematics

Grade9

Easy

Question

Calculate the surface area of the sphere with radius of 19.6cm

9160.88cm²
4827.5cm²
10305.99cm²
82447.96cm²

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: 4827.5cm²

$text Surface Area end text equals 4 pi r squared equals 4 cross times pi cross times 19.6 squared equals 1536.64 pi equals 4827.5 text centimeters end text squared$

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