Question

The radius of the base of a cone is 9 cm and height is 12cm. Find the slant height​

Answer 1

Answer:

slant height is denoted by 'l'

l=5cm

Answer 2

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The radius of the base of a cone is 9 cm and height is 12cm. Find the slant height.

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$15 \: cm$

Explanation:

Let the radius of the base of cone be 'r' and height be 'h'.

r = 9 cm

h = 12 cm

Let the slant height of the cone be 'l'.

Formula:

$l = \sqrt{ {r}^{2} + {h}^{2} }$

$l = \sqrt{ {(9)}^{2} + {(12)}^{2} }$

$l= \sqrt{81 + 144}$

$l = \sqrt{225}$

$l = 15$

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