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SSC MTS 2024 PYQ — Question 8

SSC MTS - 30/10/2024 - (9:00 AM - 11:00 AM) • Quantitative Aptitude • Q8

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The cost of painting the surface of a large spherical ball at the rate of ₹2.40 per cm2 is ₹9,240. What is the radius (in cm) of the ball? (Use π=227\pi = \frac{22}{7})

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Correct answer: D

Explanation

The correct answer is option 4 i.e. 17.5.

Surface area of ball = 9240/2.40 = 3850

Now, surface area of sphere = 4πr24 \pi r^2

⇒ 3850 = 4 × (22/7) × r2

⇒ r2 = 306.25

⇒ r = 17.5