Answers

  • qais
  • Content Quality
2015-12-18T10:25:51+05:30
By Pythagoras theorem,
(slant height)² = (radius )² + ( height)²
⇒radius² = (28)² - (21)²
               = (28 +21) (28- 21)
               = 49 × 7
radius = 7√7 cm
now, volume = ( π r² h)/3
                     =((22/7)× 343× 21)/3
                     = 7546 cm³
∴ volume = 7546 cm³
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