Answer:
hmmmm.... sorry but i really dont know this yet
Step-by-step explanation:
120/2=60 (sum of both lengths)
4x+4=60
4x=56
x=14
length=46
width=14
First you find the area of the front face 1/2bh or in you case 10x12=120 1/2 of 120 is 60 next you multiply 60 by 20 to get 1,200 for the voulume