Find the circumference of the circle whose radius is 5 cm. (Take $\mathrm{\pi }=3.14$)

Given, the radius (r) of the circle = 5 cm

We know that,

$\mathbf{Circumference}\mathbf{ }\mathbf{of}\mathbf{ }\mathbf{a}\mathbf{ }\mathbf{circle}\mathbf{=}\mathbf{2}\mathbf{\pi r}$

Substituting the values:

= $2\times 3.14\times 5$

$\mathbf{Circumference}\mathbf{=}\mathbf{31}\mathbf{.}\mathbf{4}\mathbf{ }\mathbf{cm}$

Hence, the circumference is 31.4 cm.