Question

the radius of a circle is 10 cm . find the circumference of the circle​

Answer 1

$r = 10cm \\ c = 2\pi \: r \\ c = 2 \times \frac{22}{7} \times 10 \\ c = 62.85cm$

Answer 2

circumference =2 x pie x r

=2 x 3.14 x 10

= 6.27 x 10

= 62.7cm