How big is 13ft?

This ancient greek mathematician estimated the most accurate calculation of pi? What is the square feet of 1.5 acres? Which shape has 4 sides of equal length but no right angles? How do you find the average of three numbers? 5 girls are on a bus every girl has 5 baskets there are 5 cats in each basket and each cat has 5 kittens If the bus stops and 3 girls get off how many legs are on the bus? What is 72 celsius in Fahrenheit? 10 ways to be a better student? What is two fifth of teen? Does a sphere have 0 faces? Which is greater 0.09 or 0.55? How many yd are in 30 feet? How do you write romen numbers above 500? What number in Arabic Numerals is roman numeral MCMXLIV? What is 8.3 stone in kilograms? Can a population have more than one sample associated with it? How to Combine 1 3 4 6 to 24? How many feet are in 170 yards? What is the least common muilt. of 4 and 12? What is geometry as a subject? What does gon mean at the end of octagon?