# JSTSK-350111
# problem 1.7.py
# Cynthia Koopman
# c.koopman@jacobs-university.de

# prompt the radius and change to float
radius = input('radius =')
radius = float(radius)
# declare pi
pi = 3.14159
# compute the area
area = pi * radius * radius
#print the area
print('The area is',area)