Question

the slant height of a right circular cone is 13 cm and vertical height is 12cm its radius will be

Answer 1

slant height l^2=r^2+h^2
13^2=r^2+12^2
169-144=r^2
25=r^2
r=5

Answer 2

In this question,It is given that,

Slant height (l) = 13 cm

Height (h) = 12 cm

We know that,

=> l^2= h^2+r^2

Put the given value.

=> (13)^2 = (12)^2+r^2

=> 169 = 144 + r^2

=> 169-144 = r^2

=> 25 = r^2

=> root25= r

=> 5 = r

Or,

=> r = 5

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