alleryایک مکمل سلنڈر (r=6,h=8 cm) میں ایک ہی r,h کا ٹھوس شنک ہوتا ہے۔ اس کا پانی سلنڈر r=4 سینٹی میٹر میں ڈالیں۔ نئی گہرائی؟
A12 cm
B8 cm
C6 cm
D18 cm
Answer & Solution
Correct answer: A. 12 cm
پانی کا حجم π×6²×8 − (1/3)π×6²×8 = 192π cm ³;
بنیادی رقبہ 16π سے تقسیم کرنے سے گہرائی 12 سینٹی میٹر ملتی ہے۔
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