Answer:
The goal in solving an equation is to get the variable by itself on one side of the equation and a number on the other side of the equation. To isolate the variable, we must reverse the operations acting on the variable.
Step-by-step explanation:
Find
using Pythagorean Theorem,
.
.
.
Hope this helps.
50.24 because you have to remember Pi times radius squared is area of a circle

Then

which is a disk of radius 1, hence with area
.