The diameter is the distance from one side of the circle's circumference, through the center of the circle, to the opposite side.
14cm
Practice makes perfect
We want to find the diameter of the circle in the given diagram.
Let's recall the definitions of radius and diameter.
Radius: Distance from the center of the circle to any point on the circumference.
Diameter: Distance from one side of the circle's circumference, through the center of the circle, to the opposite side.
We can see in the diagram that the radius is 7cm. According to the definitions, the diameter is twice the radius. Therefore, the diameter is 7* 2=14cm.
