Question

There is a path round the outside of a
circular area, the radius of the circular
area is 10 m and the width of the path
is 3 m 5 dm. Find the area of the path.​

Answer 1

Answer:

Radius of the circular garden, r=

2

210

=105m

Radius of the region covering the garden and the path, R=105m+7m=112m

Area of the region between two concentric circles

with radius of outer circle R, and inner circle r =π(R

2

−r

2

)

Hence, the area of the path =π(112

2

−105

2

)=

7

22

(12544−11025)=

7

33418

=4774m

2

solution