Exercise 4: Paint

Your task is to write a program to calculate the area of the walls and ceiling of a room, e.g. so you can work out how much paint to buy for painting it. The skeleton program calculates the volume instead of the area.

Your task is to change it to calculate the area of the walls and ceiling. You can calculate everything in a single expression, but it might be better to introduce some more variables, e.g. endWall, sideWall and ceiling to hold the sub-areas to be added together.

// Find the area of the walls and ceiling of a room. class Paint { public static void main(String[] args) { Paint program = new Paint(); program.area(); } void area() { int length = 10; int width = 6; int height = 3; System.out.println(length*width*height); } }

Hint 1

Hint 2

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