The diameter of a circle is 3.5 cm. What is the circumference of the circle ?

Solution (By Examveda Team)

Radius :
$$\eqalign{ & = \frac{{3.5}}{2}cm \cr & = \frac{7}{4}cm \cr} $$
∴ Circumference :
$$\eqalign{ & = \left( {2 \times \frac{{22}}{7} \times \frac{7}{4}} \right)cm \cr & = 11\,cm \cr} $$