If there was a circle and i wanted to find out the area.
what is the area of a circle with a radius of 5

The formula for the area of a circle is πr^2
r means radius.
If the radius is 5, then r = 5.
This means the equation for the area is π(5)^2
π is about equal to 3.14.
So we can replace π with 3.14.
(3.14)(5)^2
According to the order of operations, the first step to solve this is to do 5^2, which is exponents.
5^2 = 25
Next, multiply.
25 • 3.14 = 78.5
So the area of the circle with a radius of 5 is approximately 78.5 square units.