Consider measurements of the width 11) and length l of a piece of paper used to calculated the area of the paper using A = w x l. 1. If the length of the paper is measured twice using a ruler marked with 1mm increments, and the measurements give values of l = 298mm and l = 294mm, what value should be used for l? for (SI? Express your answer in the form I :I: 6l 2. If the width of the paper is also measured twice using a ruler marked with 1mm incre ments to give a value of w = 210mm both times, what value should be used for w? for 611)? Express your answer in the form 21) :|: 6w 3. What is the area of the paper? What is the uncertainty in the area? Express your answer in the form A :I: 6A