Constructing a Circle

Q.

The distance around a circular region is called _________

Q.

State whether the following statements are true or false.

The length of the diameter of a circle is twice the length of the radius.

1. True
2. False

Q.

How many sectors of ${60}^{\circ }$ can be made in a circle, if no two sectors overlap?

1. 5

2. 6

3. 10

4. 4

Q.

A circle is divided into three sectors. Two of them have angles of ${120}^{\circ }$ and ${75}^{\circ }$respectively. What will be the angle of the third sector?

1. ${265}^{\circ }$

2. ${160}^{\circ }$

3. ${180}^{\circ }$

4. ${165}^{\circ }$

Q.

The distance once around the circle is called

1. Radius

2. Chord

3. Diameter

4. circumference

Q.

A diameter is the largest $\_\_\_\_\_\_\_\_\_\_\_\_$.

Q. Circumference of the circle is also called as

1. diameter
2. area
3. radius
4. none of these

Q.

what is the formula of circumference of a circle ?

Q. What is the total boundary length of a circle called?

1. Area
2. Volume
3. Circumference
4. Diameter

Q. Find the area of a circle whose circumference is 44 cm.

Q.

The distance around the circle is called ____.

1. Circumference

2. Radius

3. Diameter

4. Center

Q.

Which picture shows 180° of a circle?

1. 

2. 

3. 

4. 

Q.

How many sectors of ${120}^{\circ }$ can be formed in a circle, if no two sectors overlap?

1. 4

2. 5

3. 6

4. 3

Q. We can draw a circle with the help of a ruler.

1. True
2. False

Q. Identify factor trees of 18 from the given figures.

1. Only figure (A)
2. Only figure (B)
3. Both figure (A) and (B)
4. None of the above

Q.

The instrument used for drawing a circle is called a ________ .

1. Scale

2. Protractor

3. Compass

4. Glider

Q.

The perimeter of a semi-circle is ____.

1. Half of Radius

2. Half of Diameter

3. Half of Circumference

4. Twice of Circumference

Q.

Which picture shows ${90}^{\circ }$ of a circle?

1. 

2. 

3. 

4. 

Q.

A circle is divided into three sectors. Two of them have angles of ${120}^{\circ }$ and ${75}^{\circ }$respectively. What will be the angle of the third sector?

1. ${265}^{\circ }$

2. ${160}^{\circ }$

3. ${180}^{\circ }$

4. ${165}^{\circ }$

Q.

The length of the boundary of a circle is called as its ___.

1. Radius

2. Circumference

3. Diameter

4. Chord