Need help with 2.1 and 2.2

Bric W. Weisstein. CR CU0 CRC, 2002. Programming Exercises 1 Write a function to compute the circumference of a circle with a radius of r. Use r as the parameter to the function. Use from the math module. 22 Write a function to compute the area of a circle with a radius of r. Use r as the parameter to the function. Use from the math module. parameter to the function. Use from the math module. tion = 16(arctan)-4(arctan23g), where arctan is the arc tangent function from 2.3 Write a function to compute the volume of a sphere with a radius of r. Use r as the 2.4 Write a function that will return an approximate value for by evaluating the equa- the math library. 2.5 Write a function that will return an approximate value for by evaluating the equa- tion = 1 640204744), where In is the log function from the math library. 2.6 Write a function isEven that takes a number as a parameter and returns T number is even and False otherwise. to value for by evaluating the equa- onote the