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SSC GD 2021 PYQ — Question 58

SSC GD Constable (English) - 22nd November 2021 Shift 1 • Quantitative Aptitude • Q58

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The Perimeter of circular garden is 506 m. The cost (in Rs.) of levelling is at Rs. 14/m2 is: (Take π=227\pi=\frac{22}{7})

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Correct answer: C

Explanation

The correct answer is option 3 i.e. 285131

ATQ,

We have given,

2π\pir = 506

⇒ 2 × 22/7 × r = 506

⇒ r = 161/2

The cost (in Rs.) of levelling is at Rs. 14/m2 = 14  π\pir2

=14π\pir2 = 22/7 × (161/2)2 = 285131