MCQ
The circumference of a circle whose diameter is $4.2\ cm$ is :
- ✓$13.2\ cm$
- B$4.2\ cm$
- C$11\ cm$
- D$22\ cm$
✓
Answer
Correct option: A.
$13.2\ cm$
Given : Diameter $(d) = 4.2\ cm$
$\therefore $ Circumference $=\pi\text{d}=\frac{22}{7}\times4.2=13.2\text{ cm}$
$\therefore $ Circumference $=\pi\text{d}=\frac{22}{7}\times4.2=13.2\text{ cm}$
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