area of a triangle = 1/2 base x height
56.4 = 1/2 x 12 x height
56.4 = 6 x height
height = 56.4 /6 = 9.4cm
Answer:104ft^3
Step-by-step explanation:
volume=length x width x height
Volume=13 x 4 x 2
Volume=104ft^3
Answer:
0
Step-by-step explanation:

Changing x to y and y to x:

I hope I helped you.
1/2 is the answer cause it is rise over run and the rise is 1 and the run is 2