एका वृत्तचितीची त्रिज्या दुप्पट केली आणि तिची उंची निम्मी केली. तर तिच्या घनफळात काय बदल होईल?
Aते चार पट होते
Bते निम्मे होते
Cते अपरिवर्तित राहते
Dते दुप्पट होते
Answer & Solution
Correct answer: D. ते दुप्पट होते
घनफळ हे r चा वर्ग गुणिले h च्या प्रमाणात बदलते, म्हणून 4 x 1/2 = 2 आणि घनफळ दुप्पट होते.
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