This is initially an exercise in "de-construction" to enable construction.

The first calculation may involve a little algebra to rearrange the familiar area formula or substitution and solving the equation.
Either way it is necessary to establish the radius which will give the correct area.

Marking off the six arcs around a circle circumference is an important formative experience.

The student needs to check that they understand how this "works", how the process amounts to six equilateral triangles.