St Colmcille's Community School
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A-Auxiliary
A-CAD
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A-Equal Widths
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A-Rotations
A-Tangents
A-Triangles
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Long Questions
Q1-Orthographic
Q2-Rotations
Q3-3D Views
Q4-Developments
Q5-Transformations
Q6-Ellipse & Parabola
Exam Revision
Junior Cert Section A
Plane Figures
Hint
Draw the smaller circle inside the plate
Then measure from the edge of the plate, through the centre to the edge of the smaller circle in order to get the sum of the two radii
Hint