Find the output when the input 123456789 int digits(int n) { int r, sum = O; while (n > 0) { r =n % 10; n = n/10; if (r % 2 == 0) sum = sum + r; } return sum;

The area A of a Hemisphere is computed using the following equation. A = 4Tr2 %3D where n=3.14159265 and r is the radius. Write an algorithm (Step 4 of problem solving methodology) that reads a radius r from a user then computes the area A using the above-mentioned formula. The algorithm repeats the same process for five positive radius values. [Hint: use any repetition structure]