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Class 10 Mathematics Medium Mcq English Medium

A cone has radius 9 cm and height 12 cm. What is its slant height?

Question
A cone has radius 9 cm and height 12 cm. What is its slant height?
3 cm
21 cm
15 cm
17 cm
Answer
15 cm
Detailed Explanation
By Pythagoras, l = Ö(r² + h²) = Ö(81 + 144) = 15 cm. — Examisthan.com
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