The Cone (Leaving Cert Mathematics): Quizzes

Vertex above centre of circular base

Vertical distance vertex to base centre

Distance vertex to base edge point

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

$V = \frac{1}{3}\pi r^2 h$

$\pi r l$

$\pi r l + \pi r^2$

Perpendicular height $h$

Slant height $l$

10 cm

13 cm

Use Pythagoras to find $h$