Constructions of Circles and Concentric Circles

Name all the points that are lying on the circle given below.

Construct concentric circles of radii $5 \mathrm{cm}, 8 \mathrm{cm}$ and $10 \mathrm{cm}$.

Construct concentric circles of radii $5 \mathrm{cm}$ and $11 \mathrm{cm}$.

Construct a circular ring between two circles of radii $7 \mathrm{cm}$ and $4 \mathrm{cm}$.

Construct a circular ring between two circles of radii $8 \mathrm{cm}$ and $5 \mathrm{cm}$.

The following circles are concentric circles.

The following circles are concentric circles.

In the adjoining figure, $C$ is the centre of the circle. The tangent to the circle of radius $6 \mathrm{cm}$ from a point $P$ outside the circle is of length $8 \mathrm{cm}$. If the distance of the point $P$ from the farthest point of the circumference is $k \mathrm{cm}$, then find the value of $k$.

With a given center and a given radius, only one circle can be drawn.

A circle can have only one diameter.

Draw a circle with radius $3$$\mathrm{cm}$.

Concentric circles can have different centres.

In the figure below, the larger circle has $7$ identical smaller circles inside it, touching each other. $O$ is the centre of the larger circle as well as the smaller circle in the middle.

What is the ratio of the radii of the larger circle to the smaller circle?

In the given diagram,

∠BAO = _____ degrees.

Which of the following quadrilateral can be formed by joining the end points of two diameters of a circle?