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The diameter of a circle is 3.5 cm. What is the circumference of the circle ?
Answer & Solution
Correct Answer:
Option
A
Radius :
$$\eqalign{ & = \frac{{3.5}}{2}cm \cr & = \frac{7}{4}cm \cr} $$
∴ Circumference :
$$\eqalign{ & = \left( {2 \times \frac{{22}}{7} \times \frac{7}{4}} \right)cm \cr & = 11\,cm \cr} $$
$$\eqalign{ & = \frac{{3.5}}{2}cm \cr & = \frac{7}{4}cm \cr} $$
∴ Circumference :
$$\eqalign{ & = \left( {2 \times \frac{{22}}{7} \times \frac{7}{4}} \right)cm \cr & = 11\,cm \cr} $$
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