1. A = a * h → h = A / a
2. V = √3/4 * a2 * h → h = 4√3 * V / a2 ; a = √(4/√3 * V/a)
3. A = pi * r2 * α/360° --> α = 360° * A / (pi * r2) ; r = √(360° * A / (pi * α))
4. V = 4/3 * pi * r3 → r = (3/4 * V / pi)^(1/3)
5. O = 6 * a2 → a = √(O / 6)
6. O = 4 * pi * r2 → r = √(O / (4 * pi))
7. A = 1/2 * (a + c) * h → h = 2 * A / (a + c)
8. a2 + b2 = c2 → a = √(c2 - b2)