Answer:
Step-by-step explanation:
All you have to do is just multiply 6 in. and 20 in. because you are just finding the area of the rectangle not the triangle that is in the rectangle.
6in.*20in.=120in
Amswer120in
LOOK BELOW: USE FORMULA WHL WIDTH X HEIGHT X LENGTH
4 IN, 3IN, 6IN =72 IN CUBED
6IN, 3IN, 2IN= 36 IN CUBED
4IN, 5IN, 4IN= 80 IN CUBED
2IN, 9IN, 3IN= 54 IN CUBED