Surface Area
Practice
Expressions to find surface area - Answers
1. Finally, we add the area of all 5 faces. The surface area of the rectangular prism can be found with the following expression:
\(100+40+40+40+40\)
2. There are six square faces with an area of 16 square units each. The following expression represents the surface area of the cube.
\(6 \cdot 16\)
3. Finally, we add the area of all 5 faces.
\(24+24+120+160+200\)
The following expression represents the surface area of the triangular prism.
\(2 \cdot 24+120+160+200\)
4. Finally, we add the area of all 6 faces.
\(15+15+30+30+18+18\)
The following expression represents the surface area of the rectangular prism.
\(2 \cdot 15+2 \cdot 30+2 \cdot 18\)