This is a special case. If after step two I would've gotten y=something... I would have plugged that new y value into my first equation
4:
V= L x W x H
V= 8.2ft x 9.4ft x 10.7 ft
V= 824. 756 ft3 or 824.8ft3
The volume of the cube is 824.8 ft3. The answer is F.
Where is this triangle you speak of
no because she turned it only 90 degrees not 180.
180 would be a mirror reflection