Question

What is the circuference of a circular disc of radius 14 cm
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Answer 1

The given data in the question is as below

Radius of circular disc=$14 cm$

We have to find the circumference of a circular disc

As we know that,

circumference of a circle =$2\pi r$

where, r= radius of circular disc

           Value of $\pi$ is $\frac{22}{7}$

Has disc is a circular in  shape

So, circumference of a circular disc =$2\pi r$

Circumference of a circular disc= $2 \times \frac{22}{7} \times 14$

Dividing $14$ by $7$ we get,

Circumference of circular disc=$2\times 22\times 2$

By multiplying $2$ by $22$ we get,

Circumference of circular disc=$44\times 2$

By multiplying $44$ by $2$ we get,

Circumference of circular disc= $88$ cm

Therefore, Circumference of circular disc is equal to $88$ cm

Answer 2

To find : circumference of a circular disc .

Given : radius of circular disc is $14\ cm$ .

Solution :

• Circumference of circular disc is the total length of boundary of  circular disc .
• As per given data we know that radius of circular disc is $14\ cm$ .
• We have to find circumference of a circular disc. Therefore , we use following formula ,
• Circumference of circular disc = $2\pi r$

                                                           $= 2\times \frac{22}{7}\times 14 \\= 2\times 22\times 2 \\= 88\ cm$

Hence , circumference of circular disc is $88\ cm$ .