Question

a circular field of radius 105m has a circular path of uniform width 5m along and inside its boundary . find the area and path

Answer 1

Answer:

Step-by-step explanation:

Outer radius =R=105m

Inner radius=R−width=105−5=100m

Area of path=area between two concentric circles

=A=πR  

2

−πr  

2

 

⟹A=π(105  

2

−100  

2

)

⟹A=3220m  

2

 

Hence area of path is 3220m  

2

Answer 2

Given

Outer radius =R=105m  

So

Inner radius=R−width=105−5=100m

Area of path=area between two concentric circles  

A=πR ^2−πr ^2

 A=π(105^2

−100^2

)

A=3220m^2

 

Area of path is 3220m^2

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