c++

The formula to compute the area of a circle is

area = PI * radius²

so if a circles radius doubles (i.e. is multiplied by 2), the circles area will be four times as large as before. Write a program that creates a table showing the radius and area for a circle whose radius begins with 1 and continues doubling until it is 8. Use 3.14156 for PI or to be more accurate with your answers use PI = acos(-1). You may need to include to use acos.

Use the following for your table heading (output once before the loop) if you like:

cout << " Circles " << "Radius Area " << "-------------- ";

and the following for the detail lines (one output per loop iteration):

cout << setw(4) << (your radius variable) << setw(9) << (computed area) << endl