Relation between diameter radius and circumference are discussed here.
What is the relation between diameter and radius?
Solution:
Diameter of a circle is twice of its radius.
Formula:
For Example:
1. Find the diameter of a circle whose radius is 4.5 cm.
Solution:
We know, Diameter = 2 radius.
Radius = 4.5 cm.
= 2 x 4.5 cm.
= 9 cm.
Therefore, diameter = 9 cm.
2. Find the radius of a circle whose diameter is 7 cm.
Solution:
We know, Radius = Diameter/2
Diameter = 7 cm.
= 7/2 cm.
= 3.5 cm.
Therefore, radius = 3.5 cm.
3. Find the diameter of a circle whose radius is 1.5 cm.
Solution:
We know, Diameter = 2 radius.
Radius = 1.5 cm.
= 2 x 1.5 cm.
= 3 cm.
Therefore, diameter = 3 cm.
4. Find the radius of a circle whose diameter is 8 cm.
Solution:
We know, Radius = Diameter/2
Diameter = 8 cm.
= 8/2 cm.
= 4 cm.
Therefore, radius = 4 cm.
5. Find the diameter of a circle whose radius is 2 cm.
Solution:
We know, Diameter = 2 radius.
Radius = 2 cm.
= 2 x 2 cm.
= 4 cm.
Therefore, diameter = 4 cm.
What is the relation between circumference and diameter?
Solution:
Circumference of a circle is slightly more than three times of its diameter.
● Circle
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