clear;

// ”ΌŒar‚Μ“ό—͂𑣂·
r = input("Enter the radius of a circle: ");
// ‰~‚̖ʐςπŒvŽZ
a = %pi * r ^ 2;

// ‰~‚Μ”ΌŒa‚Ɩʐςπ•\Ž¦‚·‚ι
disp("r = " + string(r) + ", " + "A = " + string(a));