Draw circles with centres A,B and C each of radius 3 cm, such that each circle touches the other two circles.

The two circles touch each other if

Three equal circles each of diameter d are drawn on a plane in such a way that each circle touches the other two circles. A big circle is drawn in such a manner that it touches each of the small circles internally. The area of the big circle is

Four circles having equal radii are drawn with centres at the four corners of a square. Each circle touches the other two adjacent circles. If the remaining area of the square is 168 cm2, what is the size of the radius of the circle? (in centimeters) (a) 14 (b) 1.4 (c) 35 (d) 21

Two circles, each of radius r, with centres P and Q. are such that each circle passes through the centre of the other circle. Then the area common to the circles is less than one-third of the sum of the areas of the two circles by

Three circles of radius 63 cm each are placed in such a way that each circle touches the other two. What is the area of the portion enclosed by the three circles ? (in sq. cm)

In the figure, the circles with centeres A and B touch each other at E. Line l is a common tangent which touches the circles at C and D respectively. Find the length of seg CD, if the radii of the circle are 4 cm, 6 cm.

Three circles each of radius 7cm are drawn in such a way that each of them touches the other two. Find the area enclosed between the circles.

Three circles of raidus 21 cm are placed in such a way that each circle touches the other two. What is the area of the portion enclosed by the three circles ? (In sq. cm)

In Fig.12.25, ABCD is a square of side 14cm. With centres A,B,C and D, four circles are drawn such that each circle touch externally two of the remaining three circles.Find the area of the shaded region.