Declaring and Using Constants

In this problem, you will create a program that declares constants PI (3.14159) and TAX_RATE (0.1) using the final keyword, calculates a circle's area and a tax-included price, and displays the results to standard output.

Learning Objective: Understand how to declare and use constants (final) in Java

Overview

Create a program that declares values that should not change as constants and uses them in calculations.

Specifications

1. Declare constant PI with value 3.14159 (final double)
2. Declare constant TAX_RATE with value 0.1 (final double)
3. Calculate and output the area of a circle with radius 5.0
4. Calculate and output the price including tax for price 1000

Output Format

Circle area: 78.53975
Price with tax: 1100.0