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# How do you write it in Python

coolsubo 注册会员
2023-02-27 16:39

the reference answer GPT ᴼ ᴾ ᴱ ᴺ ᴬ ᴵ < br / > is a Python implementation code below:

``````import math

circumference = 2 * math.pi * r
round_area = math.pi * r ** 2

print("Circumference is %.2f" % circumference)
print("Round area is %.2f" % round_area)
``````

First, we use the input() function to take the user's input radius value and convert it to a floating-point number type. We then use the pi constant from the math library to calculate the circumference and the circle area and assign the results to the variables circumference and round_area, respectively.

Finally, we format the output as a string, leaving two decimal places for the circumference and area of the circle. Where %.2f means to output a floating-point number and keep two decimal places.

chen19860602 注册会员
2023-02-27 16:39
)) print ( "Circumference is %.2f" % ( 2 * . pi * r)) print ( "Round area is %.2f" % ( math . pi * (r ** 2 ))) .
< !- - - - - >
dick0514 注册会员
2023-02-27 16:39
``````r = input("请输入半径")
r = float（r）
s = 3.14*r*r
l = 2*3.14*r
print("面积是%.2f" %s)
print("周长是%.2f" %l)
``````

dianhaosu 注册会员

Publish Time
2023-02-27 16:39
Update Time
2023-02-27 16:39