Multiple choice

Find the value of largest possible cone inscribed in a cylinder of radius 8 cm and height 21 cm. एक 8 सेमी. त्रिज्या और 21 सेमी. ऊंचाई के बेलन के अन्तर्गत एक अधिकतम सम्भव शंकु का आयतन क्या होगा?

  1. 1526 cm2/सेमी2

  2. 1490 cm2/सेमी2

  3. 1408 cm2/सेमी2

  4. 1502 cm2/सेमी2
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C Correct answer
Explanation

Largest cone in cylinder has same base and height: r=8cm, h=21cm. Volume = (1/3)πr²h = (1/3)π(64)(21) = 448π ≈ 448×(22/7) = 1408 cm³. Note: Question asks for value (volume), units should be cm³ not cm² as shown in options.

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