[" Consider the figure and find radius of bigger "],[" circle."C_(1)" is centre of bigger circle and radius "],[" of smaller circle is unity."]

In a given figure, find radius of smaller circle, if PQRS is the square?

O is the centre of the smaller circle,O' is the centre of bigger circle.CD is tangent to the smaller circle,Find the radius of the smaller circle.

The area of the circle with radius y is w. The difference between the areas of the bigger circle (with radius y) and that of the smaller circle (with radius x) is w. So (x)/(y) is equal to

The adjoining figure shows two circles with the same centre.The radius of the larger circle is 10cm and the radius of the smaller circle is 4cm.

In the figure below, the radius of the bigger circle is (sqrt(2) +1) cm and the radius of all the smaller circles are equal. Each of the smaller circles touches two of the other three smaller circles and the larger circle as shown. Find the area (in cm2) of the shaded portion.

The adjoining figure shows two circles with the same centre. The radius of the larger circle is 10 cm and the radius of the smaller circle is 4 cm.Find: (a) the area of the larger circle (b) the area of the smaller circle (c) the shaded area between two circles ( π=3.14)

In the figure,the radius of the larger circle is 2cm and the radius of the smaller circle is 1cm and the larger circle passes through the centre of the smaller circleThe length (incm) of the chord AB is :

The adjoining figure shows two circles with the same centre. The radius of the larger circle is 10 cm and the radius of the smaller circle is 4 cm(a) the area of the larger circle (b) the area of the smaller circle (c) the shaded area between the two circles. ( pi = 3.14)