Maharashtra BoardEnglish MediumSTD 7MathsMensuration2 Marks
Question
Find the area of a circle whose diameter is:
28cm.
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Answer
Diameter of the circle $=28\text{cm}$
$\therefore\text{Radius}(\text{r})=\frac{28}{2}=14\text{cm}$
and Area $=\pi\text{r}^2=\frac{22}{7}\times14\times14\text{cm}^2$
$=616\text{cm}^2$
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