[" 10.The areas of two concentric circles are "962.5cm^(2)" and "1386cm^(2)" .Find the "],[" width of the ring."]

The areas of two concentric circles are 962.5cm^2 and 1386 cm^2 respectively. What is the width of the ring?

The areas of two concentric circles are 1386cm^(2) and 962.5cm^(2) .The width of the ring is

If the circumferences of two concentric circles forming a ring are 88cm and 66cm respectively.Find the width of the ring.

If the circumferences of two concentric circles forming a ring are 88 cm and 66 cm respectively. Find the width of the ring.

The areas of two concentric circles forming a ring are 154 sq.cm and 616sq.cm. The breadth of the ring is (a) 7cm21cmquad (d)28cm

The radii of two concentric circles are 5 cm and 3 cm respectively . Find the length of the chord of the greater circle which is also a tangent to the smaller circle.

If the circumferences of two concentric circles forming a ring are 88 cm and 66 cm respectively, then the width of the ring is :

Two concentric circles have radii 20 cm and 15 cm. Find the area of ring shaped region

In Figure, there are shown sectors of two concentric circles of radii 7cm and 3.5cm. Find the area of the shaded region. (pi=(22)/7)

The radii of two concentric circles are 4 cm and 5 cm. The difference in the areas of these two circles is :