from math import pi
k1 = 1.5
k2 = 2.7
a = 2.2e-2
b = 7.1e-2
c = 15.6e-2
x = 9e-12
numerador = k1 * k2 * a * b * c * (4 * pi * x)
denominador = (k2 * b * c) - (k1 * a * b) + (a * c * (k1 - k2))
C = numerador / denominador
print(C)
ZnJvbSBtYXRoIGltcG9ydCBwaQoKazEgPSAxLjUKazIgPSAyLjcKYSA9IDIuMmUtMgpiID0gNy4xZS0yCmMgPSAxNS42ZS0yCnggPSA5ZS0xMgoKbnVtZXJhZG9yID0gazEgKiBrMiAqIGEgKiBiICogYyAqICg0ICogcGkgKiB4KQpkZW5vbWluYWRvciA9IChrMiAqIGIgKiBjKSAtIChrMSAqIGEgKiBiKSArIChhICogYyAqIChrMSAtIGsyKSkKCkMgPSBudW1lcmFkb3IgLyBkZW5vbWluYWRvcgpwcmludChDKQ==