This math topic focuses on understanding the relationship between the diameter and radius of a circle, which is foundational in 2-dimensional geometry. Specifically, it provides problems that practice finding the radius when given the diameter. The questions are simple and are part of a broader module on classifying 2D shapes. Each problem presents several answer choices, only one of which correctly identifies that the radius is half the diameter of the circle. This topic allows for revision and reinforcement of basic circle geometry concepts.
Work on practice problems directly here, or download the printable pdf worksheet to practice offline.
Practice:
Circles - Rule to Find Radius from Diameter - Simple
Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.
If 'd' is the diameter, what is the radius 'r'?
Circles - Rule to Find Radius from Diameter - Simple Worksheet
| Math worksheet on 'Circles - Rule to Find Radius from Diameter - 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 'd' is the diameter, what is the radius 'r'? |
| Nothing, r and d are not related |
| r and d add to 90 |
| r is half of d |
| r is the same as d |
| r and d add to 180 |
| r is twice d |
| If 'd' is the diameter, what is the radius 'r'? |
| r and d add to 180 |
| r is twice d |
| r and d add to 90 |
| r and d add to 360 |
| r is half of d |
| Nothing, r and d are not related |
| If 'd' is the diameter, what is the radius 'r'? |
| Nothing, r and d are not related |
| r is half of d |
| r and d add to 360 |
| r is the same as d |
| r is twice d |
| r and d add to 90 |
| If 'd' is the diameter, what is the radius 'r'? |
| r is half of d |
| r is twice d |
| r is the same as d |
| r and d add to 90 |
| Nothing, r and d are not related |
| r and d add to 180 |
| If 'd' is the diameter, what is the radius 'r'? |
| r and d add to 180 |
| r is the same as d |
| Nothing, r and d are not related |
| r and d add to 90 |
| r is half of d |
| r and d add to 360 |
| If 'd' is the diameter, what is the radius 'r'? |
| r is the same as d |
| Nothing, r and d are not related |
| r is twice d |
| r and d add to 180 |
| r is half of d |
| r and d add to 360 |
| If 'd' is the diameter, what is the radius 'r'? |
| Nothing, r and d are not related |
| r and d add to 360 |
| r is twice d |
| r and d add to 90 |
| r is half of d |
| r and d add to 180 |