Question

can you answer this?

Answer 1

Multiply all the sides to get area. Because it is a triangle, divide your answer by two.
4 times 8 times 10 =  320
320 divided by 2 = 160

Answer 2

What you need to do is multiply 4 w/ 8 to get 32. You then need to divide 32 w/ 2 since you're finding the area of the triangular face getting you 16. Finally, you would then multiply 16 w/ 10 giving you a Volume of 160 cubic inches.