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A pair of eyeglass frames are mode of epoxy plastic (coefficient of linear expansion = 1.2...

A pair of eyeglass frames are mode of epoxy plastic (coefficient of linear expansion = 1.2 x10-4 °C-1. At room temperature (21 °C) the frames have a circular lens holes 2.2 cm in radius. To what temperature must the frames be heated if lenses 2.21 cm in radius are to be inserted into them. Answer in °C

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