To find the total surface area of the eraser, we need to calculate the surface area of all its sides.
The eraser has the shape of a rectangular prism, with dimensions:
- Length = 5 cm
- Width = 2 cm
- Height = 1 cm
The surface area of a rectangular prism is calculated as:
Total Surface Area = 2lw + 2lh + 2wh
Plugging in the values:
Total Surface Area = 2(5)(2) + 2(5)(1) + 2(2)(1)
Total Surface Area = 20 + 10 + 4
Total Surface Area = 34 cm²
Therefore, the total surface area of the eraser is 34 cm².
What is the total surface area of the eraser? Your answer should have two decimal places.
1 answer