Question

use the circle below to answer the questions. the length of line segment ef is □ centimeters

Explanation:

Step1: Recall the property of a circle's diameter

In a circle, if a line passes through the center (like EF), it is a diameter. The radius of the circle is given as 15 cm.

Step2: Use the diameter - radius relationship

The diameter \(d\) of a circle is twice the radius \(r\), i.e., \(d = 2r\).
Here, \(r=15\) cm, so \(d = 2\times15\) cm.

Step3: Calculate the length of EF

\(d=30\) cm. Since EF is a diameter, the length of EF is 30 cm.

Answer:

30