What are real life examples of circumference?

What might be the name of the unit between decameters and kilometers if a decimeter is 0.1 meter and a decameter is 10 meter? What would happen if you were pulling a cart tipped at about 45 degree angle and you put a board as a new extened handle with the cart at a 20 degree angle closer to the ground what will happen? What happen on February 24 2001? How many days until February 9? What is the greatest possible numbers that can be rounded off to 25500? Is zero a proper noun? What is the combination of radical sign and together with the number? Do only integers have absolute value? What is the name of a 11-sided polygon? How fast do you have to run if you were going 1.5 miles in 9.30 minutes? What is true concerning the diagonals a kite? How many bits do you need to represent 63 values using 8 bits per value? What is uses of shadow graph? Can you mix amox-clav 875 and cefdinir 300? What is sixteen over pi? How do you completely factor 2x squared subtracted by 13x plus 20? What is 13 out of 100 as a percent? What would the volume be of a rectangular shaped water tank that was 10m longx 5 m high and 5 m wide? How many L equals to 500mL? All circle are also ellipse true or false?