This math topic focuses on understanding the relationship between the radius and diameter of a circle. It explores the simple rule that the diameter is twice the length of the radius. Targeting beginners, the topic tests this concept through multiple-choice questions, helping learners identify the correct relationship amidst various incorrect options. Each question presents the same inquiry—how the radius 'r' relates to the diameter 'd'—with varied erroneous answers given plus the correct one. This is part of a larger unit on 2D shape classification within geometry.
Work on practice problems directly here, or download the printable pdf worksheet to practice offline.
Practice:
Circles - Rule to Find Diameter from Radius - Simple
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If 'r' is the radius, what is the diameter 'd'?
Circles - Rule to Find Diameter from Radius - Simple Worksheet
| Math worksheet on 'Circles - Rule to Find Diameter from Radius - Simple (Level 1)'. Part of a broader unit on 'Geometry - Circle Concepts - Intro' Learn online: app.mobius.academy/math/units/geometry_circles_concept_intro/ |
| If 'r' is the radius, what is the diameter 'd'? |
| d is the same as r |
| d and r add to 90 |
| Nothing, d and r are not related |
| d and r add to 360 |
| d and r add to 180 |
| d is twice r |
| If 'r' is the radius, what is the diameter 'd'? |
| d and r add to 180 |
| d and r add to 90 |
| Nothing, d and r are not related |
| d is the same as r |
| d and r add to 360 |
| d is twice r |
| If 'r' is the radius, what is the diameter 'd'? |
| d is the same as r |
| d and r add to 360 |
| d is half of r |
| Nothing, d and r are not related |
| d is twice r |
| d and r add to 180 |
| If 'r' is the radius, what is the diameter 'd'? |
| d is half of r |
| d and r add to 360 |
| d is the same as r |
| d and r add to 180 |
| d is twice r |
| Nothing, d and r are not related |
| If 'r' is the radius, what is the diameter 'd'? |
| d is half of r |
| d and r add to 360 |
| d and r add to 90 |
| d is twice r |
| d and r add to 180 |
| d is the same as r |
| If 'r' is the radius, what is the diameter 'd'? |
| d and r add to 90 |
| d is twice r |
| d is the same as r |
| Nothing, d and r are not related |
| d and r add to 180 |
| d is half of r |
| If 'r' is the radius, what is the diameter 'd'? |
| d is twice r |
| d and r add to 180 |
| d is half of r |
| d and r add to 360 |
| d and r add to 90 |
| Nothing, d and r are not related |