How do you write Three hours fifteen minutes?

The living room of kens house is 132 square feet the kitchen is 60 square feet and the dinning room is 100 square feet how much area are the three rooms all together? What is the wall thickness of 700mm diameter GRP pipe? How to write one ninth as a decimal and a percentage? How many people are the game is she sold 348 tickets and the cost for people with an activity pass was 1.25 and the 3.00 for the other without a pass the total is 613.50? What two Numbers add to 20 but multiply to 63? How many question can you miss to get a 80 percent on a 64 question test? How many squares in 1600 ft? Is 1 km 0.001 meter? What is Fifty nine thousand eight hundred in scientific notation? What is the diameter of a circle with and area of 80 square meters? What is the formula for finding the base area of a square? What is 2 hours and 30 minutes rounded to the nearest hour? How many peaks in pyramid? What is 735 divided by 3? How many feel is a half mile? How do you calculate 5 percent as a fraction? Is a fraction a real solution or a non-real solution in algebra? How many barrels per inch in a 12x25 500 bbl tank? What are the rules in adding numbers in scientific notation? What is the purpose of an SWR meter?