What is the total surface area of the eraser? Your answer should have two decimal places.
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.