from a solid cylinder whose height is is 2.4 cm and diameter is 1.4 CM a conical cavity of the same height and same diameter is hollowed out find the total surface area of the remaining solid to the nearest cm²

Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2