Question

How long is the radius of the circle?Type your answer in the box below.cmEGс.BA15 cm

Answer 1

The radius is 7.5 cm

1) Since the Diameter, is an interior straight line segment passing through the origin from side to side, the Diameter is twice longer the radius.

`D=2R\text{ }\Leftrightarrow R=(D)/(2)`

2) As we have in the picture, the Diameter of 15 cm

3) Then we can write

`D=(15)/(2)\text{ or D=7.5}`