If base=height on the triangle and that equaled the length in the square, 2T=Sq.
If radius of circle and sphere are the same, 4C=S.
If base and height of triangle are same, if base=5 and the radius in circle=2, areas are similar.
The pattern continues. For every increase in 5 in triangle height, if increase 2 radius, areas remain similar.
In case you didn't figure it out yet, that equals 2.5 to 1. The 1 radius is 3.14. They actually just rounded it modestly. It's actually 3.14159265... Or in other words, π. The triangle with both a base and height of 2.5 have an area of 3.13, just one hundredth from pi!
*KEY*
Sq=Square
T=Triangle
C=Circle
S=Sphere
