the area of a square field is 625 km 2 . how long will it take for a horse to run around at the speed of 25 km / h ?
import math
n0 = 625.0
n1 = 2.0
n2 = 25.0
t0 = math.sqrt(max(0, n0))
t1 = t0 * 4.0
answer = t1 / n2
print(answer)