Question: User: 8. −(−4) + (−3) − (−2)
10. −|−4| + |−6| − (−5)
Add, subtract, multiply, or divide as numbers.
12. 9 3/5 + 5 3/10 − 7 1/2
Find the perimeter of each figure.
15. 10
14
18
The figure is an L-shaped polygon with right-angle markers at the corners; position_hint = center
Find the area of each figure.Problem 15
1. **State the problem:** Find the area of the L-shaped polygon with side lengths $10$, $14$, and $18$.
2. **Understand the shape:** The L-shaped polygon can be divided into two rectangles.
3. **Assign dimensions:**
- Let the vertical side be $18$ units.
- The horizontal sides are $10$ and $14$ units.
4. **Divide the L-shape into two rectangles:**
- Rectangle A: width $10$, height $14$
- Rectangle B: width $(18 - 14) = 4$, height $10$
5. **Calculate areas:**
- Area of Rectangle A: $$10 \times 14 = 140$$
- Area of Rectangle B: $$4 \times 10 = 40$$
6. **Sum the areas:**
$$140 + 40 = 180$$
7. **Final answer:** The area of the L-shaped polygon is $180$ square units.