The Formula to find the Area of a circle using the radius is:

r = 8
So:



And you get about 201.06193
So, the area of a circle with a radius of 8 is about 201.06
Hope this Helps :)

The Quadratic Function has the domain as the set of all real numbers.
For the range, start from minimum value to maximum value.
But because the parabola is downward as a < 0. Thus, there are no minimum value but the maximum value instead.
Therefore the range is y <= -4
adding two negative integers always yields a negative sum
1415.61 IS HER TOTAL BILL BEFORE SHIPPING. 1415.61X .15=212.34
1415.61 REPAIR
28.89 SHIPPING
212.34 TIP
1656.84 TOTAL