Test: Circle- 2 - Class 5 MCQ

Using the formula:

d = 2 r

Solving for r:

The radius is half the length of the diameter and is joined to the centre at one end. Hence, it is the radius of the circle.

The radius is half the length of the diameter and is joined to the centre at one end. Hence LM is not the radius of the circle

If two or more circles that have the same center, but different radii they are termed as concentric circles.

Using the formula:

d = 2 r

Solving for r:

A circle is the set of all points in a plane that are equidistant from a given point called the center of the circle.

Circumference of a circle whose radius is r is given by 2 π r

Here d= 4 cm 

Hence, r is 2 cm

Circumference of the circle = 2 π (2)

Circumference of the circle = 4 π cm

A diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circle.

A chord that passes through the center of a circle is called a diameter and is the longest chord of that specific circle.

Using the formula:

d = 2 r

Solving for r: