Question

Use nets to solve triangular problems.
What is the total surface area of this eraser? Your answer should have two decimal places 1.12 inches., 2 inches, 6 inches, 1.5 inches

Answer 1

To calculate the total surface area of the eraser, we need to find the area of each of the triangular faces and then add them together.

Given that the eraser has dimensions of:
- Base: 1.12 inches
- Height: 2 inches

Firstly, calculate the area of the triangular faces:
1. Area of the front face: (1/2) * base * height = (1/2) * 1.12 * 2 = 1.12 square inches
2. Area of the back face: (1/2) * 1.12 * 2 = 1.12 square inches
3. Area of the two side faces: 1.5 * 2 + 1.5 * 2 = 6 square inches

Now, add the areas of these faces to find the total surface area:
1.12 + 1.12 + 6 = 8.24 square inches

Therefore, the total surface area of the eraser is 8.24 square inches.