Question

find the area of shaded region given that outer radius=19cm , inner radius that =12cm π =22/7

Answer 1

Correct option is

A

330 cm

2

Let us given R=19 cm & r=16 cm

Area of outer circle =π(19)

2

=

7

22

×361

Area of inner circle =π(16)

2

=

7

22

×256

∴ area of the ring =

7

22

×361−

7

22

×256

=

7

22

(361−256)

=

7

22

(105)

=330 cm

2

Answer 2

Answer:

Hope you get the best answer.

Step-by-step explanation:

Sorry for the photos.