A polygon of nine sides, each side of length 2, is inscribed in a circle. The radius of the circle is ____________.

Find the dimensions of the largest rectangle that can be inscribed in a semi circle of radius r cm.

The line 2x-y+1=0 is tangent to the circle at the point (2, 5) and the center of the circle lies on x-2y=4. The radius of the circle is

How many sides does a circle have ?

in a triangle with one angle (2 pi )/(3) the lengths of the sides form an A.P if the length of the greater side is 7 cm , then the radius of the circumcircle of the triangle is

Choose the correct answer and give justification for each. (ii) From a point Q, the length of the tangent to a circle is 24 cm. and the distance of Q from the centre is 25 cm. The radius of the circle is

A circle is inscribed in an equilateral triangle of side adot The area of any square inscribed in this circle is ______.

Each side of a square has length 4 units and its center is at (3,4). If one of the diagonals is parallel to the line y=x , then anser the following questions. The radius of the circle inscribed in the triangle formed by any three vertices is

A polygon has 54 diagonals. Number of sides of this polygon is

Rectangles are inscribed inside a semi-circle of radius rdot Find the rectangle with maximum area.