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Mathematics

Grade9

Easy

Question

Find the surface area of the sphere with radius of 5cm

315cm²
278.22cm²
300cm²
314.16cm²

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: 314.16cm²

$text Surface Area end text equals 4 pi r squared equals 4 cross times pi cross times 5 squared equals 100 pi equals 314.16 space c e n t i m e t e r s squared$

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