1. The problem statement, all variables and given/known data 1) How long a piece of wire would you need to form a circular arc subtending an angle of 1.6 rad, if the radius of the arc is 8.1 cm? Express your answer using two significant figures. 2) In 2004 Mizuki Noguchi of Japan won the Women's Olympic Marathon, completing the 26 mi, 385 yd course in 2 h, 26 min, 20 s. What was Noguchi's average speed, in meters per second? Express your answer using four significant figures.