The numbers on this ruler represent centimeters. 170cm
what is the precision of this ruler? cm what is the greatest possible error for the measurement indicated by the arrow? cm what is the margin of error for the measurement based on where the arrow is pointing on the ruler? cm to cm

Answer this two poles, ab and ed, are fixed to the ground with the of ropes ac and ec, as shown: two right triangles abc and edc have a common vertex c. angle abc and edc are right angles. ab is labeled 13 feet, ac is labeled 15 feet, ec is labeled 10 feet, and ed is labeled 4 feet.what is the approximate distance, in feet, between the two poles? 11.14 feet16.65 feet14.35 feet15.59 feet