Sasi Math (Revised for 1024)

Scroll:Measurements >> Circle >> mcq (4468)

Written Instructions:

For each Multiple Choice Question (MCQ), four options are given. One of them is the correct answer. Make your choice (1,2,3 or 4). Write your answers in the brackets provided..

For each Short Answer Question(SAQ) and Long Answer Question(LAQ), write your answers in the blanks provided.

Leave your answers in the simplest form or correct to two decimal places.

The circumference of a circle whose radius is 21 cm is

1) 142
2) 132
3) 127
4) 122

( )

Choose the best answer:

The diameter of a circle is 40cm then its radius is....

1) 30cm
2) 20cm
3) 40cm
4) 80cm

( )

Choose the correct answer :

The line segment joining any two points on the circle is called...

1) None
2) Diameter
3) Chord
4) Radius

( )

Choose the correct answer :

The line segment that joins the centre of a circle to any point on the circle is called

1) Diameter
2) Chord
3) Radius
4) None

( )

Choose the correct answer :

A chord passing through the centre is called

1) None
2) Diameter
3) Chord
4) Radius

( )

The circumference of a circle whose radius is 49 cm is

1) 308
2) 318
3) 303
4) 298

( )

Choose the best answer:

The diameter of a circle is 90cm then its radius is....

1) 45cm
2) 180cm
3) 90cm
4) 55cm

( )

Choose the correct answer :

The line segment joining any two points on the circle is called...

1) None
2) Radius
3) Diameter
4) Chord

( )

Choose the correct answer :

The line segment that joins the centre of a circle to any point on the circle is called

1) Chord
2) None
3) Radius
4) Diameter

( )

10)

Choose the correct answer :

A chord passing through the centre is called

1) Radius
2) Chord
3) None
4) Diameter

( )

The circumference of a circle whose radius is 21 cm is

1) 132
2) 127
3) 122
4) 142

Answer: 1

SOLUTION 1 :

Circumference of the circle = 2πr

= 2 x $\frac{22}{7}$ x 21³

= 2 x 22 x 3

= 132 cm

Circumference of the circle 132 cm.

Choose the best answer:

The diameter of a circle is 40cm then its radius is....

1) 20cm
2) 30cm
3) 80cm
4) 40cm

Answer: 1

SOLUTION 1 :

Given,

d = 40cm

r = $\frac{d}{2}$

r = $\frac{40}{2}$ = 20

r = 20

Choose the correct answer :

The line segment joining any two points on the circle is called...

1) Diameter
2) None
3) Radius
4) Chord

Answer: 4

SOLUTION 1 :

Ans = Chord

Choose the correct answer :

The line segment that joins the centre of a circle to any point on the circle is called

1) Radius
2) Chord
3) Diameter
4) None

Answer: 1

SOLUTION 1 :

Ans = Radius

Choose the correct answer :

A chord passing through the centre is called

1) Chord
2) Diameter
3) None
4) Radius

Answer: 2

SOLUTION 1 :

Ans = Diameter

The circumference of a circle whose radius is 49 cm is

1) 308
2) 298
3) 318
4) 303

Answer: 1

SOLUTION 1 :

Circumference of the circle = 2πr

= 2 x $\frac{22}{7}$ x 49⁷

= 2 x 22 x 7

= 308 cm

Circumference of the circle 308 cm.

Choose the best answer:

The diameter of a circle is 90cm then its radius is....

1) 90cm
2) 180cm
3) 55cm
4) 45cm

Answer: 4

SOLUTION 1 :

Given,

d = 90cm

r = $\frac{d}{2}$

r = $\frac{90}{2}$ = 45

r = 45

Choose the correct answer :

The line segment joining any two points on the circle is called...

1) Diameter
2) Chord
3) Radius
4) None

Answer: 2

SOLUTION 1 :

Ans = Chord

Choose the correct answer :

The line segment that joins the centre of a circle to any point on the circle is called

1) None
2) Radius
3) Chord
4) Diameter

Answer: 2

SOLUTION 1 :

Ans = Radius

10)

Choose the correct answer :

A chord passing through the centre is called

1) Diameter
2) Radius
3) Chord
4) None

Answer: 1

SOLUTION 1 :

Ans = Diameter