1. **State the problem:** We are given a rectangle ABCD with vertices A(-7, 8), B(3, 8), C(-7, -6), and D(3, -6). We need to find:
a) The perimeter of the rectangle.
b) The area of the rectangle.
2. **Formula for perimeter of a rectangle:**
$$\text{Perimeter} = 2(\text{length} + \text{width})$$
3. **Formula for area of a rectangle:**
$$\text{Area} = \text{length} \times \text{width}$$
4. **Find the length and width:**
Since the rectangle is aligned with the axes, the length and width can be found by the differences in x-coordinates and y-coordinates of the vertices.
- Length (horizontal side) = distance between A and B or C and D:
$$|x_B - x_A| = |3 - (-7)| = |3 + 7| = 10$$
- Width (vertical side) = distance between A and C or B and D:
$$|y_A - y_C| = |8 - (-6)| = |8 + 6| = 14$$
5. **Calculate the perimeter:**
$$\text{Perimeter} = 2(10 + 14) = 2(24) = 48$$
6. **Calculate the area:**
$$\text{Area} = 10 \times 14 = 140$$
**Final answers:**
- Perimeter = 48
- Area = 140
Rectangle Perimeter Area 6802Fe
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.