题解 | #球的表面积#
球的表面积
https://www.nowcoder.com/practice/7a5e2f1ed2594e38bad804323a775c93
import math
r = [1, 2, 4, 9, 10, 13]
def cal(r_list: list):
v_list = [ round(4 * math.pi * r**2, 2) for r in r_list ]
for v in v_list:
print(v, end='\n')
cal(r)
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