Question

The circumference of 2 concentric circle forming a ring is 88 cm and 110 cm. Find the width of ring .

Answer 1

the radius of ist is 88×7÷22×2=56
the radius of second is 110×7÷22×2=70
now u can

Answer 2

circumference of bigger circle is 110 so radius is 2π\10 so radius is 44/70. now radius of smaller circle is 2π\88 so answer is 1/14 now width is equal to bigger radius - smaller circle radius and that is equals to 44/70-1/14 and that equals to 0.5 cm

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