Properties and a Method Together

The interface IRectangle declares two read-only properties, Width and Height, plus an Area() method. The Box class already exposes Width and Height. Complete Area() so it returns Width * Height. Do NOT write a Main method.

For a Box with width 4 and height 5 the program prints the output shown in Expected Output.

Expected Output:

20↵

= newline. The output ends with a newline — print one after the last line.

Hints2 available

Topics:

Interfaces

Code Editor

Tab to indent (Esc then Tab to move on) · Ctrl+Enter to run · Shift+Alt+F to format · Ctrl+Space to expand shortcuts (cw, cr, fori)

Your Output

Run your code to see the output here...

Test Cases

Run your code to see test case results.