A coin is formed from two different metals - an inner disk surrounded by an outer drug. The inner disk hes a radius of 19.6mm when at room temperature (24"C). and is made of a material with a coefcient of linear expansion of 2.22 x 105K'] . The outer ring has an inner radius of 1956113111 when at room temperature. an outer radius of 25.59mm. and has a coefficient of linear expansion of 5.02 x I'll5KI . Clearly the disk cannot t inside the ring when cold and must both be heated to fuse them together. To what temperature must these be heated so that the area of the inner disk ts inside the outer ring