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What is the measure of ac? 5 units 13 units 26 units 39 units

You can find the constant of proportionality by finding the ratio of

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