Respuesta :

Kerely
To calculate the volume of a prism you multiply the area of it's cross section by the length Therefore 5 x 3= 15 (Area of the rectangle) 15x8= 120 (Volume of prism)
Solutions 

Caden built a rectangular prism that has a length of 8 units a width of 3 units, and a height of 5 units.To calculate the volume of the prism you have to multiply the area of it's cross section by the length. 

5 x 3= 15 (Area)

15 x 8= 120 (Volume of whole prism)