Question

A triangle has a base $6cm$ and has the same area as a circle of radius $6cm$ the altitude of the triangle in cm is .......

Answer 1

Area of the circle $=\pi {.6}^2$
Area of the triangle $=\frac{1}{2}\times 6\times h$, where $h$ is the altitude
$=\frac{1}{2}\times 6\times h=\pi .6^2$
or $h=12\pi$