Find the radius of the cone if the height and the slant height of a co – InterviewSolution

1.

Find the radius of the cone if the height and the slant height of a cone are 21 crmand 28 cm respectively

Answer»

By Pythagoras theorem,(slant height)² = (radius )² + ( height)²⇒radius² = (28)² - (21)² = (28 +21) (28- 21) = 49× 7radius = 7√7 cm

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