Question

The
inner
and
outer
radii of circular
Path
5cm
and 9cm,
find
its
area?​

Answer 1

Answer:

ANSWER

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 a flat circular ring formed by two concentric circles whose radii are 9 cm and 5 cm =π(9

2

−5

2

)=

7

22

(81−25)=176cm

2