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.

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.

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

In two concentric circles, a chord of length 8cm of the larger circle touches the smaller circle. If the radius of the larger circle is 5cm then find the radius of the smaller circle.

The area of the region between two concetric circles is 770cm^2 If the radius of the greater circle is 21 cm.Find the radius of the smaller circle.

Two circles have an external tangent with length 36cm. The shortest distance between these circles is 14cm. If the radius of the longer circle is 4 xx the radius of the smaller circle then the radius of the larger circle in cms is

Two circles have an external tangent with length 36 cm. The shortest distance between these circles is 14 cm. If the radius of the longer circle is 4 times the radius of the smaller circle then the radius of the larger circle in cms is

In the given figure,diameter of larger semi- circle is 14cm and radius of smaller semi- circle is 3.5cm. find :

In the following figure, three circles are given. The two smaller circles are equal. The radius of the larger circle is 8 cm. O is the centre or the larger circle. Find area of shaded portion.

Two circles touch each other at point X. Two common tangents of the circles meet at point P and none of the tangents passes through X. These tangents touch the larger circle at points B and C. If the radius of the larger circle is 15 cm and CP = 20 cm, then what is the radius (in cm) of the smaller circle?

The difference between the radii of a smaller circle and a larger circle is 7cm and the difference between the areas of the two circles is 1078 sq.cm . Find the radius of the smaller circle.