Question

calculate the circumference of a circle of which length of daimeter is 23 cm​

Answer 1

Answer:

72.22 cm

Step-by-step explanation:

2×pi×23/2

=2×3.14×23/2

=3.14×23

=72.22 cm

Answer 2

To find : circumference of circle .

Given : length of diameter = $23\ cm$ .

Solution :

• We know , know that radius of circle is half the diameter .
• i.e. $d = \frac{r}{2}$  
• Therefore , $r = \frac{23}{2}$
• Circumference of circle  = $2\pi r$

                                                 $= 2 \times\frac{22}{7} \times \frac{23}{2} \\= \frac{506}{7}\\=72.28$

Hence , circumference of circle is $72.28 \ cm$ .