S K Khanuja Solutions for Chapter: Circles, Exercise 1: Exercise

Explain:

Radius of a circle.

Explain: Diameter of a circle.

Explain: Chord of a circle.

Take a point $\mathrm{O}$ on your notebook and draw circle of radii $4 \mathrm{cm}, 5.3 \mathrm{cm}$ and $6.2 \mathrm{cm}$, each having the same centre $\mathrm{O}$.

Draw a circle with centre $\mathrm{C}$ and radius $4.5 \mathrm{cm}$. Mark $\mathrm{P},\mathrm{Q}$ and $\mathrm{R}$ such that $\mathrm{P}$ lies in the interior of the circle, $\mathrm{Q}$ lies on the circle and $\mathrm{R}$ lies in the exterior of the circle.

Draw a circle with centre $\mathrm{O}$ and any radius. Draw $\mathrm{AC}$ and $\mathrm{BD}$ two perpendicular diameters of the circle. Join $\mathrm{AB}, \mathrm{BC}, \mathrm{CD}$ and $\mathrm{DA}$.

The diameter of a circle is $14 \mathrm{cm}$, find its radius.

Given a circle with centre $\mathrm{O}$ and radius $3.5 \mathrm{cm}$, what is the length of the longest chord of the circle.