Answer:
A) 310 cm²
Step-by-step explanation:
The surface area is the area of the two-dimensional surfaces of this three-dimensional figure.
Start by multiplying each 5x4 rectangle. There are four of them that are visible from the front.
Now, find the surface area of the large rectangle in the back and the left side of the figure.
Find the surface area of the top of this figure.
- 10 · 5 = 50 cm²
- 5 · 5 = 25 cm²
Find the surface area of the bottom of this figure (it's the same as the area of the top).
Add all of the surface areas together to find the total surface area of the figure.
- 80 + 80 + 75 + 75 = 310 cm²
