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Question
Find the radius of a sphere in cm whose volume is 36π cubic cm.
एक गोले की त्रिज्या सेमी में ज्ञात कीजिए जिसका आयतन 36π घन सेमी है।
A.
4
B.
3
C.
5
D.
6
Answer ( Option B)

3

Solution

 Key Points :-

प्रयुक्त सूत्रः
V = (4/3)πι³ जहाँ
, r = गोले की त्रिज्या गणनाः
36π = (4/3)πr3 
= r³ = (36π × 3) / 4π
⇒ r³ = 108/4
= r³ = (36π × 3) / 4
 ⇒ r³ = 108/4
 ⇒ r³ = 27
 ⇒ r = 27
⇒r = 3

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