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SSC CGL 2022 PYQ — Question 40

SSC CGL Tier II - Quant - 29 Jan 2022 • Quantitative Aptitude • Q40

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The radius of a solid right circular cone is 36 cm and its height is 105 cm. The total surface area (in cm2) of the cone is:

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Correct answer: C

Explanation

The correct answer is option 3 i.e. 5292 π

Radius of a cone = 36 cm.

Height of a cone = 105 cm.

Slant height = 362+1052\sqrt{36^2 + 105^2}

l = 111 cm.

The total surface area of cone = πrl + πr2.

= πr(l + r)

= π × 36 × (111 + 36) = 5292π