What is double 3900?

What is the set of all points in the space that are a given distance from a line? What is the mass form of thirty-eight ninety seven hundredths kilograms in standard form? What is 3.888888888888.... in a fraction? 1/2" + 3/8" =? What is 0.290 as a fraction? What is a negative space? What is the common factor of 11and 15? How do you work out 7 percent of 1200? What does hydro apap 7.5-500 mean? A quadrilateral where each angle is at a right angle? Is one fifth greater than three fifth? What does turn to 4 legs 2 legs and then 3 legs? What is the Roman Numeral LII mean? A right angle has one angle that measures 16 degrees what are the messures of the other two angles? What is a antonym of gamut? How do we calculate probability from bivariate normal distributions? What are co-prime factors of 40? How many lines of symmetry does a regular 20-gon have? What is the name of aryabhatta father? What 4 numbers you add will give you 40?