To find the surface area of the box, we need to find the area of each of the six sides and then add them all together.
1. The area of the front and back sides (which are both 9 cm x 5 cm) is:
2 * (9 cm * 5 cm) = 90 cm²
2. The area of the two side faces (which are both 8 cm x 5 cm) is:
2 * (8 cm * 5 cm) = 80 cm²
3. The area of the top and bottom faces (which are both 9 cm x 8 cm) is:
2 * (9 cm * 8 cm) = 144 cm²
Now, add all these areas together:
90 cm² + 80 cm² + 144 cm² = 314 cm²
Therefore, the surface area of the box is 314 cm².
base = 9 cm x 8 cm
height = 5 cm
what is the surface area of the box?
1 answer