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Q.एका गोलाची त्रिज्या (radius)(\text{radius}) 20%20\% ने वाढवली, तर त्याच्या पृष्ठफळात (surface area)(\text{surface area}) किती टक्के वाढ होईल?

a
40%40\%
b
44%44\%
c
42%42\%
d
48%48\%

Correct Answer: Option B

The correct solution involves applying the fundamental concept to derive the final value step by step...

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