Serway & Jewett — Temperature: Problem 8

A pair of eyeglass frames is made of epoxy plastic. At room temperature (\(20.0^\circ\text{C}\)), the frames have circular lens holes \(2.20\text{ cm}\) in radius. To what temperature must the frames be heated if lenses \(2.21\text{ cm}\) in radius are to be inserted in them? The average coefficient of linear expansion for epoxy is \(1.30 \times 10^{-4}\text{ (}^\circ\text{C})^{-1}\).