Multiple choice

If numerical value of volume and surface area of a sphere is equal then find the radius of the sphere. यदि गोले के आयतन और पृष्ठीय क्षेत्रफल का संख्यात्मक मान बराबर है तो गोले की त्रिज्या ज्ञात कीजिए।

  1. 3

  2. 4

  3. 1

  4. 2
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Volume of sphere = (4/3)πr³ and surface area = 4πr². Setting equal: (4/3)πr³ = 4πr². Cancel 4πr² from both sides: r/3 = 1, so r = 3. Option A is correct.

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