import math
s = math.sqrt(2)
approx = 1
while 1:
    approx = approx*((2/s))
    s = math.sqrt(2+s)
    if approx==1.5707963267948986:
        break

approx = 2*approx
print("Approximation of pi:", round(approx,3))
print("Enter the radius:")
r = eval(input())
area = round(approx*(r**2),3)
print("Area:", area)
db7d8aba58ad8c4e5dd81081f98bae1185f48e06
<mask token>

<mask token>
while 1:
    approx = approx * (2 / s)
    s = math.sqrt(2 + s)
    if approx == 1.5707963267948986:
        break
<mask token>
print('Approximation of pi:', round(approx, 3))
print('Enter the radius:')
<mask token>
print('Area:', area)

<mask token>
s = math.sqrt(2)
approx = 1
while 1:
    approx = approx * (2 / s)
    s = math.sqrt(2 + s)
    if approx == 1.5707963267948986:
        break
approx = 2 * approx
print('Approximation of pi:', round(approx, 3))
print('Enter the radius:')
r = eval(input())
area = round(approx * r ** 2, 3)
print('Area:', area)

import math
s = math.sqrt(2)
approx = 1
while 1:
    approx = approx * (2 / s)
    s = math.sqrt(2 + s)
    if approx == 1.5707963267948986:
        break
approx = 2 * approx
print('Approximation of pi:', round(approx, 3))
print('Enter the radius:')
r = eval(input())
area = round(approx * r ** 2, 3)
print('Area:', area)

import math
s = math.sqrt(2)
approx = 1
while 1:
    approx = approx*((2/s))
    s = math.sqrt(2+s)
    if approx==1.5707963267948986:
        break

approx = 2*approx
print("Approximation of pi:", round(approx,3))
print("Enter the radius:")
r = eval(input())
area = round(approx*(r**2),3)
print("Area:", area)