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PaintCalculator
7. Assume that a gallon of paint covers about 350 square feet of wall space. Create an application with a main() method that prompts the user for the length, width, and height of a rectangular room. Pass these three values to a method that does the following:
•	Calculates the wall area for a room
•	Passes the calculated wall area to another method that calculates and returns the number of gallons of paint needed
•	Displays the number of gallons needed
•	Computes the price based on a paint price of $32 per gallon, assuming that the painter can buy any fraction of a gallon of paint at the same price as a whole gallon
•	Returns the price to the main() method, and the main() method displays the final price.

For example, the cost to paint a15- by-20-foot room with 10-foot ceilings is $64. Save the application as PaintCalculator.java.

Insurance
8. The Harrison Group Life Insurance company computes annual policy premiums based on the age the customer turns in the current calendar year. The premium is computed by taking the decade of the customer’s age, adding 15 to it, and multiplying by 20. For example, a 34-year-old would pay $360, which is calculated by adding the decades (3) to 15, and then multiplying by 20. Write an application that prompts a user for the current year and a birth year. Pass both to a method that calculates and returns the premium amount, and then display the returned amount. Save the application as Insurance.java.