Find the surface area of the sphere (in cm²) whose radius is 126 cm and π = 22/7.

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UP Police SI (दरोगा) Official PYP (Held On: 21 Nov 2021 Shift 1)
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  1. 209584
  2. 199584
  3. 229584
  4. 219584

Answer (Detailed Solution Below)

Option 2 : 199584
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UP Police SI (दरोगा) Official PYP (Held On: 2 Dec 2021 Shift 1)
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Detailed Solution

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Given:

Radius (r) = 126 cm and π = 22/7

Formula used:

Surface Area of Sphere = 4πr2

Calculations:

Surface Area = 4 × π × r2

⇒ Surface Area = 4 × (22/7) × (126 × 126)

⇒ Surface Area = 4 × (22/7) × 15876

⇒ Surface Area = 4 × 499392/7

⇒ Surface Area = 1997568/7

⇒ Surface Area = 199584 cm2

∴ The correct answer is option (2).

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