Sometimes when turning a corner you have walk through 90 degrees or crossing a rectangular field you'd take the shortest distance across it which is its hypotenuse.
Carpentry
While doing your homework, or on mapping, or for distance.
If you are packing items into a box, you can use square roots along with Pythagorean theorem to help determine if a smaller box could work with items packed diagonally.
In comparing the effect of focal lengths in digital cameras with different sized sensors.
suck my balls
Carpentry
The Pythagorean theorem can be applied in daily life for various practical purposes, such as determining the shortest distance between two points. For example, if you're planning to build a fence in a rectangular yard, you can use the theorem to ensure the corners are square by measuring the diagonal. Additionally, it can be useful in design and construction projects to ensure right angles or when calculating dimensions for tiling or flooring. Overall, it helps in problem-solving situations that involve right triangles.
While doing your homework, or on mapping, or for distance.
If you are packing items into a box, you can use square roots along with Pythagorean theorem to help determine if a smaller box could work with items packed diagonally.
you
In comparing the effect of focal lengths in digital cameras with different sized sensors.
it can be used when adding up the sides of a computer toaster
suck my balls
In real life its not useful, unless you're going to need geometry in the career you choose.
You work as a house painter. When you set up your ladder, you like to set the base 5-ft from the wall, for stability. How high on the wall can you reach with a 12-ft ladder ? With a 15-ft ladder ? With a 30-ft ladder ? ============================================================== The question is not: Can the Pythagorean Theorem help you in real life ? The question is: Is your life real enough yet that you can use the Pythagorean Theorem to make it easier ?
how do whole number relate to everday life
You don't, unless you work in engineering. The Wikipedia article on "binomial theorem" has a section on "Applications".