Q.Name the Python Library modules which need to be imported to invoke the following functions:

Concept: Python standard library module imports — a function can be called only after importing the module that defines it.

The sqrt() function computes the square root of a number and belongs to the math module, which provides the standard mathematical operations. The start() function belongs to the turtle module, Python's built-in graphics library. …

Understanding Python's module system

Python organizes its vast collection of functions into modules — libraries that group related functionality together. You cannot call a function like sqrt() or start() directly; you must first import the module that contains it. This keeps the global namespace clean and makes code more readable.

The question asks which modules house two specific functions. Let's trace each one.

Identifying the required modules

1. The sqrt() function

The square root function is a mathematical operation, so Python places it in the math module. This module contains all standard mathematical functions — trigonometry, logarithms, constants like pi (π), and of course square roots.

To use it:

import math
result = math.sqrt(25)  # returns 5.0

Alternatively, you can import just the function:

from math import sqrt
result = sqrt(25)

2. The start() function …