the length, width, and height of a triangular prism are 10 inches, 7 inches, and 4 inches, respectively. What is its volume?

easy

10*7=70*4=280 divided by 2 equals 140

overall, the volume of that triangular prism respectively, equals 140 Inches CUBED

Volume of a trinangular prism = Area of the triangle * depth

The dimensions are not very clear.  

I will take 10 and 7 do be dimensions of the rectangluar base and 

I'll consider to have the triangle base of 7 and height of 4

 

V = (0.5*4*7)*10

V= 140 inches cubed

 

Just like Titanium said :)