The formula to calculate the Area of a Circle is defined as: area = pi * radius2. For this problem we consider pi = 3.14159:
- Calculate the area using the formula given in the description of the problem.
The input consists of a floating point value (double precision), which is the variable radius.
Display the message "A =" followed by the area value, as in the following examples, with four places after the decimal point. Use double precision variables. As with all problems, don't forget to print a line break after the result, otherwise you will. you will receive a "Presentation Error" message.
2.00
A = 12.5664
100.64
A = 31819.3103
150.00
A = 70685.7750