A) 190 plants
B) 199 plants
C) 201 plants
D) None of these
Correct Answer: D
Solution :
The side of square = 21 m \[\therefore \]Radius of each semi-circle = 105 m \[\therefore \]Area of semi-circle \[=4\left( \frac{1}{2}\pi {{r}^{2}} \right)\] \[=4\times \frac{1}{2}\times \frac{22}{7}\times 10.5\times 10.5=693\,\,{{m}^{2}}\] Area of square \[=21\times 21=441\,\,{{m}^{2}}\] \[\therefore \]Total area of bed \[=441+693=1134\,\,{{m}^{2}}\] As one rose plant needs \[6{{m}^{2}}\]space. \[\therefore \]Number of rose plant \[=\frac{\text{Total}\,\,\text{area}}{\text{Area}\,\,\text{required}\,\,\text{by}\,\,\text{one}\,\,\text{plant}}\] \[=\frac{1134}{6}=189\]plantsYou need to login to perform this action.
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