Question

Draw concentric circles having radii 3.5 cm and 5.5 cm . Find out the width of circular ring.

Answer 1

Step 1 - Draw a circle with radius $r=3.5$ cm and name the centre as $O$.

Step 2- Taking $O$ as the centre, draw another circle of radius $R=5.5$ cm.

Then, the figure results into concentric circles with radius $5.5$ and $3.5$ cm.

Then width of circular ring $=R-r=5.5-3.5=2$ cm