5. The expression for the surface area of a cylinder is shown below. Which of the following is the circumference of the circular bases of the cylinder? $$ S A=2 \pi(3)^{2}+2 \pi(3)(8) $$ $$ 36 \pi $$ $$ 48 \pi $$ $$ 6 \pi $$ $$ 12 \pi $$

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The formula for the surface area $$ S_A $$ of a cylinder is given by:

$$
S_A = 2\pi r^2 + 2\pi r h
$$

In the provided expression:

$$
S_A = 2\pi(3)^2 + 2\pi(3)(8)
$$

- **Radius ($$ r $$)**: 3
- **Height ($$ h $$)**: 8

To find the **circumference** $$ C $$ of the circular bases, use the formula:

$$
C = 2\pi r
$$

Substituting the given radius:

$$
C = 2\pi \times 3 = 6\pi
$$

**Answer:** $$ 6\pi $$
The circumference of the circular bases is $$ 6\pi $$.

The expression for the surface area of a cylinder is shown below. Which of the
following is the circumference of the circular bases of the cylinder?

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