Find the total surface area of a hemisphere with a radius of 11 cm?  

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SSC CPO 2024 Official Paper-I (Held On: 27 Jun, 2024 Shift 2)
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  1. 242π cm2 
  2. 313π cm2
  3. 363π cm2
  4. 273π cm

Answer (Detailed Solution Below)

Option 3 : 363π cm2
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SSC CPO : General Intelligence & Reasoning Sectional Test 1
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Detailed Solution

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Given:

Radius of the hemisphere (r) = 11 cm.

Formula Used:

Total Surface Area of a Hemisphere = 3πr2

Calculation:

Radius (r) = 11 cm

Total Surface Area = 3πr2

⇒ Total Surface Area = 3π × (11)2

⇒ Total Surface Area = 3π × 121

⇒ Total Surface Area = 363π cm2

The total surface area of the hemisphere is 363π cm2.

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