Question

The area between two concentriccircle
of radius R and ris:
(a) 21R2 – 2nr2
(6) (R– r2) (R2 + r2)
(c) (R + r)(R – r)
(d) 21(R + r)(R – r)​

Answer 1

Answer:

area=πR²-πr²

=π (R²-r²)

=22/7(R+r)(R-r)

hope it helps you!!