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? $(Take\ \pi=3.14)$

AcademicMathematicsNCERTClass 7

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.
Updated on 10-Oct-2022 13:36:03