Finding the Radius and Diameter in Circles WORKSHEET

This worksheet is designed to help learners practice the skill of working backwards to find a radius or diameter of a circle when the area or circumference is given. Section A begins with some fill in the blank missing number questions, where learners will be finding a missing diameter or radius from a circumference calculation. Section B then gives some circles with known circumferences, and learners need to find the missing diameter or radius. Section C then provides some more fill in the blank questions linked to the area formula, before section D presents some circles with known areas for learners to find the missing radius or diameter. Section E then gives some semicircles and sectors with a known area for learners to find a missing value. The worksheet ends with section F providing some problem solving questions.