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SSC Selection Post 2022 PYQ — Question 51

SSC Selection Post - Matriculation Level 2022 - 3 Aug 2022 - Shift 1 • Quantitative Aptitude • Q51

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What is the surface area of a spherical pot whose radius is 4.2cm? (Take π=227)\pi={22\over7})

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Correct answer: D

Explanation

The correct answer is option 4 i.e. 221.69 cm2.

Surface Area = 4πr2 4\pi r^2

r = 4.2 cm

Surface Area  = 4×227×424 \times \frac{22}{7} \times 4^2

Surface Area  = 887×17.64\frac{88}{7} \times 17.64 = 221.69 cm2