Question

calculate the diameter and radius of a circle whose circumference is 26.4m​

Answer 1

Step-by-step explanation:

Circumference=2πr

2×22/7×r=26.4

r=26.4×7/44

r=4.2m

Diameter=2r

=2×4.2

=8.4m

Answer 2

Answer :-

• The radius of circle is 4.2m
• The diameter of circle is 8.4m.

Step-by-step explanation ::

To Find :-

• The radius of the circle
• The diameter of the circle

Solution :-

Given that,

• Circumference of circle = 26.4m

We can find out the radius of the circle by applying the formula of circumference of circle,

As we know that,

Circumference of circle = 2πr

Where,

• r = Radius
• π = 22/7

Assumption :

Let us assume the radius of circle as r metres,

=> 2πr = 26.4

=> 2 × 22/7 × r = 26.4

=> 44/7 × r = 26.4

=> r = 26.4 × 7/44

=> r = 184.8/44

=> r = 4.2 metres

• The radius of circle is 4.2m

Now, the diameter of circle is,

As we know that,

Diameter of circle = 2 × radius,

=> Diameter = 2 × 4.2

=> Diameter = 8.4m

• The diameter of circle is 8.4m.