In the following fig. the diameter CD of a Circle is perpendicular to the chord AB. If AB=12 cm and CM = 2 cm. Find radius of Circle.

ABC is an equilateral triangle of side 6 cm, a Circle with centre ‘O’ passes through the verticles ABC. Find radius of Circle

From the fig. segments shown are tangents then x =

In the diagram AB is tangent and ACD is secant, AB = 6 cm and AC = 4 cm, AD=

The two Circles below are concentric, the radius of the larger Circle is 10 cm and that of the smaller Circle is 6cm. What is the length of the chord AB ?

Given O is center of smaller Circle, BD is common chord, ABC, EDO are straight lines. If AED =130°, then C O D =

In the figure x y z=

From the figure

In the fig. ‘O’ is the centre of Circle. Chords AC and BD intersect at right angles at E, if = 35° then

Here we used the concept of angle sum property of a triangle. When two lines cross at one point, a linear pair of angles is created. If the angles follow the intersection of the two lines in a straight line, they are said to be linear. A linear pair's total angles are always equal to 180°. So here the angle EBC is 35 degree.

About 2 to 5% of gypsum is added to Portland cement. It is just to

If  =

Osmosis is the phenomenon expressed by :

If  then the numerical value of  is equal to

=

 =

In the figure QS and RS are the bisectors of and respectively then