With the same centre $ O $, draw two circles of radii $ 4 \mathrm{~cm} $ and $ 2.5 \mathrm{~cm} $.

To do:

We have to draw two circles of radii $4\ cm$ and $2.5\ cm$.

Solution:

Steps of construction:

(i) To draw the circles of radii $4\ cm$  and $2.5\ cm$, take compasses and first measure $2.5\ cm$ by using a ruler.

(ii) Mark a point '$O$' for the centre.

(iii) On the point '$O$' place the pointer of the compasses.

(iv) Turn the compasses and draw the circle.

(v) Hence, the required circle of radius $2.5\ cm$ with centre $O$ is obtained.

(vi) Now, measure $4\ cm$ by using a ruler with the compasses.

(vii) Place the pointer of the compasses measuring $4\ cm$ on the point '$O$' and turn the compasses to draw another circle.

(viii) Hence, the required circle of radius $4\ cm$ with centre $O$ is obtained.

(ix) Therefore, two circles of radii $4\ cm$ and $2.5\ cm$ with centre $O$ are as shown in the figure.