Circle

Q. The total number of radii, diameter(s), and chord(s), you can name in the given figure, is ___________.

1. $6$
2. $4$
3. $7$
4. $5$

Q.

Take two sticks and a piece of rope. Drive one stick into the ground. Form two loops, one at each end of the rope. Place one loop around the stick at the centre. Put the other around the other stick. Keep the sticks vertical to the ground. Keep the rope taut all the time and trace the path.

The figure obtained will be __.

Q.

A figure is drawn such that distance of any point on the boundary of the figure is constant from a fixed point inside the figure. The figure drawn is ___.

Q. Which of the following is the approximate value π?

1. 21/7
2. 3.41
3. 3.14
4. 23/7

Q. Where do any two diameters of a circle always intersect ?

1. At the center of the circle
2. They never intersect
3. On the circle
4. At a point outside the circle.

Q. What are the instruments used to draw a circle?

1. A scale only
2. A scale and set squares
3. A scale and a protractor
4. A scale and a compass

Q.

Identify radius, centre, chord and diameter in the given circle.

1. Radius-$AB$ ; Chord-$BC$ ; Diameter -$OA$ ; Centre-$O$

2. Radii-$OA,OC,OB$ ; Chord-$BC$ ; Diameter-$AB$ ; Centre-$O$

3. Radius-$AC$ ; Chord- $OA,OB,OC$ ; Diameter-$AB$ ; Centre-$O$

4. Radii-$OA,OC$ ; Chord-$BC$ ; Diameter-$AC$ ; Centre-$O$

Q.

In the below figure, the shaded region I represents a ______ and region II represents a ______.

1. sector, arc

2. segment, arc

3. segment, sector

4. sector, segment

Q. If the diameter of a circle is 7.12 cm then what is its radius?

1. 35.6 cm
2. 3.56 cm
3. 356 cm
4. 0.356 cm

Q. The diameter of a circle is always twice its .

1. chord
2. radius
3. secant