Why might axes be divided into units other than one?

The center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.