Question

example 4: what is the radius of the plotted circle? finding the radius and the diameter of a circle on a cartesian plane is simple. first, examine the circle. next, draw an imaginary line through the center of the circle. third, count the number of blocks which span the length of the line segment to find the diameter. to find the radius, simply divide this number by 2. in this example, the diameter = 5, so the radius = 2.5.

Explanation:

Step1: Identify given diameter

The diameter is given as 5.

Step2: Calculate radius via division

Radius = $\frac{\text{Diameter}}{2}$ = $\frac{5}{2}$

Answer:

2.5