Question

find the circumference of a circle whose diameter is 28 cm.

Answer 1

hii frnd...

R=d/2
R=14
Circumference of a circle=2pieR
=2*22/7*14
=2*22*2
=2*44
=88

Here is ur answer.

Hope it helped u.

Answer 2

What is a diameter of a circle?

A diameter of a circle is the longest chord of the circle that passes through its centre.

What is the radius of a circle?

A radius of a circle is the line segment from the centre to the boundary of the circle.

What is the circumference of a circle?

A circumference of a circle is the length of the boundary of a circle.

How to calculate the circumference of a circle?

The circumference of a circle can be found by using the following formula:

$\boxed{\bold{Circumference = 2 \pi r}}$

Now, let's solve the given problem,

The diameter of a circle, d = 28 cm

So, the radius of a circle, r = $\frac{d}{2} = \frac{28}{2} = 14 \:cm$

On substituting the value of r in the formula of the circumference, we get

$Circumference = 2 \times \frac{22}{7} \times 14$

$\implies Circumference = 2 \times 22 \times 2$

$\implies Circumference = 4 \times 22$

$\implies \bold{Circumference = 88 \:cm}$

Thus, the circumference of a circle is → 88 cm.

Learn more about the circumference of a circle here:

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