जर वर्तुळाची त्रिज्या दुप्पट केली, तर त्याचे क्षेत्रफळ किती पट मोठे होते?
A8 पट
B3 पट
C2 पट
D4 पट
Answer & Solution
Correct answer: D. 4 पट
क्षेत्रफळ हे त्रिज्येच्या वर्गावर अवलंबून असते, त्यामुळे दुप्पट केल्यास 2 चा वर्ग = 4 पट होते.
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