Question

The radius and the slant height of a right circular cone are 8 cm and 10 cm respectively. Find it’s height.

Answer 1

Answer:

r = 8 cm

l=10 cm

h=?

h=√ l2-r2

h=√10*10-8*8

h=√100-64

h=√36

h=6cm

Answer 2

r = 8 cm

l = 10 cm

Using Pythagoras Theorem ,

h^2 = l^2 - r^2

=> h^2 = (10) ^2 - (8) ^2

=> h^2 = 100 - 64

=> h^2 = 36

=> h = √ 36

=> h = 6 cm Ans.

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