Daniel buys a block of clay for an art project. The block is shaped like a cube with edges lengths of 10 inches. Daniel decides to cut the block of clay into two pieces. He places a wire across the diagonal of one face of the cube. Then he pulls the wire straight back to create two congruent chunks of clay. Daniel wants to keep one chunk of the clay for later use. To keep that chunk from drying out, he wants to place a piece of plastic sheeting on the surface he exposed when he cut the cube. describe this newly exposed two-dimensional cross-section, and find its area. round your answer to the nearest whole square inch