Question

Find the height of a right circular cone if the slant height is 4 units and the radius is 2 units

Answer 1

The slant height of the right circular cone will be  $l=2\sqrt5}$

What is slant height of cone?

The formula for the slant height of the cone is given as:

$l^2=r^2+h^2$

Here we have

r=2 units

h=4 units

By putting the values we will get

$l=\sqrt{4^2+2^2$

$l=\sqrt{16+4$

$l=\sqrt{20}$

$l=2\sqrt{5}$

Hence the slant height of the right circular cone will be  $l=2\sqrt5}$

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