1. **State the problem:** We have a right triangle with sides labeled as $x + 2$ cm, $\frac{x}{2} + 4$ cm, and $x + 5$ cm. The perimeter is given as 36 cm. We need to find the value of $x$.
2. **Write the perimeter formula:** The perimeter $P$ of a triangle is the sum of the lengths of its sides:
$$P = \text{side}_1 + \text{side}_2 + \text{side}_3$$
3. **Set up the equation:** Substitute the given side lengths and perimeter:
$$x + 2 + \left(\frac{x}{2} + 4\right) + (x + 5) = 36$$
4. **Simplify the equation:** Combine like terms:
$$x + 2 + \frac{x}{2} + 4 + x + 5 = 36$$
$$\left(x + \frac{x}{2} + x\right) + (2 + 4 + 5) = 36$$
$$\left(2x + \frac{x}{2}\right) + 11 = 36$$
5. **Combine the $x$ terms:**
$$2x + \frac{x}{2} = \frac{4x}{2} + \frac{x}{2} = \frac{5x}{2}$$
6. **Rewrite the equation:**
$$\frac{5x}{2} + 11 = 36$$
7. **Isolate $x$:** Subtract 11 from both sides:
$$\frac{5x}{2} = 36 - 11$$
$$\frac{5x}{2} = 25$$
8. **Solve for $x$:** Multiply both sides by 2:
$$5x = 25 \times 2$$
$$5x = 50$$
9. **Divide both sides by 5:**
$$x = \frac{50}{5}$$
$$x = 10$$
**Final answer:** $x = 10$ cm.
Triangle Perimeter A42661
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