A 64.7 µF capacitor is made from two long strips of metal foil sandwiched between two long strips of waxed paper. The whole thing is then rolled up into a compact cylinder. The foil and paper are 26.6 mm wide. The paper is 0.9 micrometers thick and has a dielectric constant of 3.42. The foil is 4 micrometers thick. How long, in meters, must the paper and foil strip be? Note that rolling a capacitor in this way doubles the capacitance, since there are twice as many gaps, and charge resides on both sides of each piece of foil. (A micron is another name for a micrometer.)