Question 88
The Reuleaux triangle is a disk formed from an equilateral triangle, adding circle arcs with centers at the vertices of the triangle and radii equal to the side of the triangle. 
What is the area of a reuleaux triangle, if the equilateral triangle has a measure side $1~\mathrm{cm}$ ?
What is the area of a reuleaux triangle, if the equilateral triangle has a measure side $1~\mathrm{cm}$ ?