Question

1. find the circumference.

15.5 m

Explanation:

Step1: Recall the formula for the circumference of a circle when the diameter is known. The formula is \( C = \pi d \), where \( C \) is the circumference and \( d \) is the diameter.

Here, the diameter \( d = 15.5 \, \text{m} \) and we use \( \pi \approx 3.14 \).

Step2: Substitute the value of \( d \) into the formula.

\( C = 3.14 \times 15.5 \)

Step3: Calculate the product.

\( 3.14 \times 15.5 = 48.67 \, \text{m} \) (we can also use a more precise value of \( \pi \), but for simplicity, using \( 3.14 \) gives a reasonable approximation. If we use \( \pi \approx \frac{22}{7} \), the calculation would be \( \frac{22}{7} \times 15.5 \approx \frac{22\times15.5}{7}=\frac{341}{7}\approx 48.71 \, \text{m} \), but the common approximation with \( 3.14 \) is also acceptable.)

Answer:

The circumference of the circle is approximately \( 48.67 \, \text{m} \) (or \( 48.71 \, \text{m} \) if using \( \pi = \frac{22}{7} \)).