B2
diameter vs radius
The difference
| Word | Meaning | Goes with | Example |
|---|---|---|---|
| diameternoun/daɪˈæm.ə.tər/ | Meaning the length of a straight line through the middle of a circle, from one side to the other | Goes with in diameter | Example The pizza has a diameter of 30 centimeters, enough for two people. |
| radiusnoun/ˈreɪ.di.əs/ | Meaning the distance from the middle of a circle to its edge, or the area within a set distance | Goes with within a radius of | Example The circle has a radius of five centimeters. |
Which word fits?
1 of 6Pick the word for the gap. Its form may change in the sentence.
The crater is about one kilometer in .