Question: Find the distance around the figure
Q
8 cm
14 cm
graph: a composite figure in the center-left consisting of a rectangle attached to a semicircle on the left; the rectangle has a vertical side labeled 8 cm and a bottom side labeled 14 cm, and the curved semicircle forms the left end of the figure. position_hint \in {center-left}
1. **State the problem:** We need to find the distance around the figure, which is the perimeter of a composite shape made of a rectangle and a semicircle.
2. **Identify the parts:** The rectangle has height $8$ cm and width $14$ cm. The semicircle is attached to the left side of the rectangle, so its diameter is the height of the rectangle, $8$ cm.
3. **Formula for perimeter of composite figure:** The perimeter is the sum of the three sides of the rectangle (excluding the side where the semicircle is attached) plus the circumference of the semicircle.
4. **Calculate the circumference of the semicircle:**
The circumference of a full circle is $$C = \pi d$$ where $d$ is the diameter.
For a semicircle, the curved part length is half the circumference:
$$\text{semicircle length} = \frac{\pi d}{2} = \frac{\pi \times 8}{2} = 4\pi$$
5. **Calculate the perimeter:**
The three sides of the rectangle to include are the bottom side ($14$ cm), the right vertical side ($8$ cm), and the top side ($14$ cm).
So the total perimeter is:
$$P = 14 + 8 + 14 + 4\pi = 36 + 4\pi$$
6. **Final answer:**
The distance around the figure is $$36 + 4\pi$$ cm, which is approximately $$36 + 4 \times 3.1416 = 36 + 12.5664 = 48.5664$$ cm.
So, the perimeter is about $48.57$ cm.