Need Help With Coding These 2 Problems Im New To Python & Its Confusing Me

Write the function "volumeSphere" that takes a float r for the radius of a sphere and returns the volume of the sphere as a float. volume=34r3 Sample input: I=10 Expected Output: 4188.790204786391 PRACTICE PROBLEM 4 Write the function isEven that takes an integer n and returns whether or not this integer is even as a bool. Sample input: n=6 Expected Output: True