What is R-133A?

Why is it important to have accureate measurements? When a number that when squared will produce the given number? How big is 0.81 square feet? How many square slabs of 20 by 20 fit into a garden of 10 by 60? What is five over twelvne plus one over four? What is the LCM of 14 28 and 42? What is 51 over 1000 as a decimal? What is 23.45rounded to the nearest tenth? How many different 4-digit numbers can be formed using each of the digits in 1999 exactly once? 0.4 miles is equal to how much time? How do you determine if an equation represents a linear function? What does 18.5 million divided by 8000 equal? What is the ratio of 750ml to 1L? What is 8 divided by 156? How do you write 36 million is standard form? What is 0.6 percent in a fraction? How do you put cheats in reflex math? How many syllables are in the word skirt? What is the value of a 1928 quarter? What line segment connects to the center and a point on a circle?