waecmaths question:
$\triangle PQR$ is a equilateral triangle with sides $2\sqrt{3}cm$ calculate its height
Option A:
1.7cm
Option B:
3.0cm
Option C:
3.2 cm
Option D:
3.9cm
waecmaths solution:
$\begin{align} & \left| BD \right|\text{ is the }\bot ar\text{ bisector of }\left| AC \right| \\ & \left| BD \right|=\sqrt{{{(2\sqrt{3})}^{2}}-{{(\sqrt{3})}^{2}}}=\sqrt{9}=3cm \\\end{align}$
maths year:
maths topics: