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A circular flower garden has an area of $314\ m^2$. A sprinkler at the centre of the garden can cover an area that has a radius of $12\ m$. Will the sprinkler water the entire garden? $(Take\ \pi=3.14)$
Area of the flower garden$= 314\ m^2$
The radius of the circular portion covered by the sprinkler$= 12\ m$
Area$= 7\pi r^2=3.14\times12\times12$
$=3.14\times144\ m^2=452.16\ m^2$
Since $452.16\ m^2$>$314\ m^2$
Yes, the sprinkler will water the entire garden.
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