Question

perpendicular height of a cone is 12 cm and its slant height is 13 cm find the radius of the base of the cone

Answer 1

Answer:

r = 5 cm

Step-by-step explanation:

h = 12 cm , l = 13 cm

l = √(h²+r²) [ Pythagoras' theorem]

=> 13 = √(144+r²)

Squaring on both sides :

=> 169 = 144+r²

=> 169-144 = r² => 25 = r²

=> r = √25 = 5 cm

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Answer 2

Answer:

Step-by-step explanation:

H = 12; l = 13

According to Pythagoras theorem

L^2 - h^2 = r^2

√169-144 = r

√25 =r

5= r

Radius is 5 cm .

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