I need help in my ALEKS homework :)

Find the required measurements of the following trapezoids. a = 8 cm b = 16 cm h = 10 cm

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

Solve the triangle. a = 21°, c = 105°, c = 5