Give this number that is multiplied by the base and height of a triangle to find its area.
This is the ratio of the area of an inscribed circle to the area of a circumscribed circle for a square. This number is hypothesized to be the real part of solutions in the Riemann [REE-mahn] hypothesis. Multiplying this number by a whole number and one more than that whole number gives a triangular number. This number equals the cosine of the quantity pi over three. Raising a number to this power is equivalent to taking a square root. Give this number that is multiplied by the base and height of a triangle to find its area.
This is the ratio of the area of an inscribed circle to the area of a circumscribed circle for a square.
one-half (or 0.5)