1. Write a program that converts the given hex number into its octal equivalent. 2. Write a program to calculate the electrical resistance of a wire (Hint: The electrical resistance R of a cylindrical...

1. Write a program that converts the given hex number into its octal equivalent.

2. Write a program to calculate the electrical resistance of a wire (Hint: The electrical resistance R of a cylindrical wire with length l (in meter) and diameter d (in meter) can be computed from the area A of its diameter (m2 ) and the resistivity P of the material (rho, meter times Ohm).

3. Count the number of digits in a number.