Question

how long is the circumference of the circle?

Explanation:

Step1: Recall the formula for the circumference of a circle

The formula for the circumference \( C \) of a circle is \( C=\pi d \), where \( d \) is the diameter. Given \( d = 8\space m \), and taking \( \pi\approx3.14 \), we have \( C = 3.14\times8=25.12\space m \), which is approximately \( 25\space m \). Also, from the diagram, the red arrow around the circle is labeled \( 25\space m \), which represents the circumference.

Step2: Match with the options

Among the options \( 22\space m \), \( 25\space m \), and \( 13\space m \), the one that matches the circumference (either from calculation or the diagram label) is \( 25\space m \).

Answer:

B. 25 m