What is the name for 10000 years?

What is the speed of a train that traveled 543 kilometers in t hours? What is 25900 in scientific notation? What is the diagonal of a 40 x 100 rectangle? What is the formula for calculating called up capital? What is the scientific notation of 480 000 000? What are the mathematical symbols for parallel and perpendicular? What is 0.5 percent as a decimal? What two us coins make 55 cents? How many syllables are in the word roots? What are the three interval choices of a squad? What is -54 divided by 72? Can you appraise two parcels together on one appraisal? Compound word that contains the vowel sound in rope imagining things in the day that has 8 letters in it? How do you read the vernier in theodolite? How many times does 78 go into 821? What does divide mean? What are equiralent ratios? How old are you born in 1981? What is the volume of a 100 pound brick of gold? Which decimal is greater 4.90 or 4.901?