there is a path of uniform width 7m round and outside a circular garden of diameter 210m find the area of the path
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Answer:
Diameter = 210 m
Radius of inner circle r2 = 105 m
Width = 7m
Radius of outer circle r1 = 105 + 7 = 112 m
Area of path = πr12 - πr22
= π [r12 - r22]
= 22/7 (r1 + r2)(r1 + r2)
= 22/7(112 + 105) (112 - 105)
= 22/7 × 217 × 7
= 4774 m2
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