Answer:
volume of composite figure = 983.3 ft³
Explanation:
volume of composite figure = volume of cube + volume of cylinder
volume of cube = a³
where a = edge = 9
volume of cube = 9³ = 729 ft³
volume of cylinder = πr²h
where r = radius = 3
h = height = 9
π = 3.14
volume of cylinder = 3.14 * 3² * 9
= 254.34 ft³
thus, volume of composite figure =
729 + 254.34 = 983.34
rounding to the nearest tenth, volume of composite figure = 983.3 ft³