Q1 of 6 Page 93

Draw concentric circles for the following measurements of radii. Find out the width of each circular ring.

4.2 cm and 6.8 cm.

4.2 cm and 6.8 cm

Steps of construction:


Step 1: Draw a rough image and mark the given measurement.



Step 2: Take any point O and mark it’s as centre.



Step 3: With O as centre, draw a circle of radius OA = 4.2 cm.



Step 4: With O as centre, draw a circle of radius OA = 6.8 cm.



Thus, the concentric circle C1 and C2 are drawn.


Width of the circular ring = OB – OA


= 6.8 – 4.2


= 2.6 cm


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