Question

The height of a right circular cone whose radius is 5 cm and slant height is 13 cm will be

Options

• 12 cm

• 10 cm

• 13 cm

• 5 cm

Answer 1

12 cm

Explanation;

Hint:

Here r = 5 cm and l = 13 cm

h = `sqrt("l"^2 - "r"^2)`

= `sqrt(13^2 - 5^2)`

= `sqrt(169 - 25)`

h = `sqrt(144)`

= 12 cm