题解 | 圆的面积
圆的面积
https://www.nowcoder.com/practice/a235f884c28e46c491e7ddc414b54d2b
import math R = float(input()) area = math.pi * R ** 2 print(f"{area:.3f}")
圆的面积
https://www.nowcoder.com/practice/a235f884c28e46c491e7ddc414b54d2b
import math R = float(input()) area = math.pi * R ** 2 print(f"{area:.3f}")
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