if a drawing has an outer circle of diameter 30 and an inner circle of diameter 24 , then what fraction of outer circle ' s surface is not covered by the inner circle ?
n0 = 30.0
n1 = 24.0
t0 = n0 / 2.0
t1 = n1 / 2.0
t2 = t0**min(2.0, 5)
t3 = t1**min(2.0, 5)
t4 = t2 * 3.141592653589793
t5 = t3 * 3.141592653589793
t6 = t4 - t5
answer = t6 / t4
print(answer)