Hemisphere Surface Area 92108C
1. **State the problem:** We need to find the surface area of a hemispherical dome with radius $r = 6$ cm.
2. **Formula for surface area of a hemisphere:** The surface area of a hemisphere (half of a sphere) is given by
$$\text{Surface Area} = 2\pi r^2$$
where $r$ is the radius of the hemisphere.
3. **Calculate the surface area:** Substitute $r = 6$ cm into the formula:
$$\text{Surface Area} = 2\pi (6)^2 = 2\pi \times 36 = 72\pi$$
4. **Interpretation:** The surface area of the hemispherical dome is $72\pi$ square centimeters.
5. **Approximate value:** Using $\pi \approx 3.1416$,
$$72\pi \approx 72 \times 3.1416 = 226.195$$
**Final answer:** The surface area of the hemispherical dome is $72\pi$ cm$^2$ or approximately 226.2 cm$^2$.