Question

. Draw two concentric circles of radii 7.5cm and 5cm and find the width of the circular​

Answer 1

Answer:

r

1

=7r

2

=5

areaofportionbetweencircles

=π(r

1

2

−r

2

2

)

=π(7

2

−5

2

)

=

7

22

×(49−25)

=

7

22

×24=75.428cm

2