A paragraph could very well be one sentence, but it could just as easily be a long 20 sentence paragraph. It's usually thought of as being a complete separate thought and containing as many sentences are needed before you reach a natural breaking point to move on to the next paragraph. Hope that helped.
Centi-means one-hundredth, so 1metre = 100 centimeters, therefore 1 decameter = 10 x (100 centimeters) = 1000 centimeters. Hecto-means one hundred, therefore 1 hectometer = 100 meters = 10 decameters. Kilo-means one thousand, of course, so 1 kilometer = 1000 meters, and since 1 hectometer = 100 meters, 1 kilometer = 10 hectometers.
hecto is 100 times bigger than base   Kilo-When you say 10k. it means 10,000. k means times 1,000, or  1,000. kilo is 1,000 bigger than base Any liquid, no matter how small, removed from that litre is a  fraction. If half the liquid is drunk, then 50% or  1/2 (half) of a litre will remain.