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प्रश्न
A circular flower bed is surrounded by a path 4 m wide. The diameter of the flower bed is 66 m. What is the area of this path? (π = 3.14)
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उत्तर
Radius of flower bed = `66/2` = 33 m
Radius of flower bed and path together = 33 + 4
= 37 m
Area of flower bed and path together = 3.14 × 37 × 37
= 4298.66 m2
Area of flower bed = 3.14 × 33 × 33
= 3419.46 m2
Area of path = Area of flower bed and path together − Area of flower bed
= 4298.66 − 3419.46
= 879.20 m2
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