10
Find the surface area of the lectangular prism.
You may draw a net of the rectangular prism to organize and visualize all of the faces.
Area front rectangle: 10 x 5
Area top rectangle: 8 x 5
Area left rectangle: 8 x 10
Area back rectangle: 10 x 5
Area bottom rectangle: 8 x 5
Area right rectangle: 8 x 10