West Bengal Board Solutions for Chapter: Geometrical Concept of Circle, Exercise 4: Let's Work out-20

$MN$ is the _____ of the circle.

The points M and N have divided the circle in two _____.

The area bounded by the arc $SR$ and the radii $SO$ and $RO$ is called a _____.

The diameter PQ has divided the circle into two equal parts which are called _____. 

With the help of a compass and a pencil a $3 \mathrm{cm}$ circle is drawn. Let's name its center, radius, diameter, chord, arc.

Identify the major sector and the minor sector from the given figure.

The radius of two circles are 2cm, 4cm respectively. let's write the length of their diameter without measuring.

If the greatest chord of the circle is 10 cm then find the length of its radius.