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SSC Selection Post 2024 PYQ — Question 59

SSC Selection Post - Higher Secondary Level - 21 June 2024 - Shift 2 • Quantitative Aptitude • Q59

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Find the surface area of a ball of radius 21 mm. (Use π = 227{{22} \over 7})

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Correct answer: C

Explanation

The correct answer is Option 3 i.e. 5544 mm2.

Surface area of sphere(SA) = 4πr2

here, r = radius

SA = 4 × 227{{22} \over 7} × 21 × 21

SA = 5544 mm2