In a circle C(O,r), AOB and COD are two diameters perpendicular to each other. Find length of chord AC.

In Fig. 12.27, AB and CD are two diameters of a circle (with centre O) perpendicular to each other and OD is the diameter of the smaller circle. If OA = 7 cm, find the area of the shaded region.

Draw a circle and any two of its diameter.If you join the ends of thes diameters,what is the figure obtained?What figure is obtained if the diameters are perpendicular to each others?How do you check your answer?

Two straight long conductors AOB and COD are perpendicular to each other and carry currents I_1 annd I_2 respectively. Find the magnitude of magnetic field at a point P at a distance a from the point O to a direction perpendicular to the plane ABCD.

In a circle of radius 5 cm, AB and AC are two chords, such that AB = AC = 6 cm. Find the length of the chord BC.

In a circle of radius 20 cm, AB and AC are two chords such that AB = AC = 8sqrt5cm . Find the length of the chord BC.

AB is a diameter of the circle C(AO,R) and the radius OD is perpendicular to AB. If C is any point on the arc DB, find angleBAD and angleACD

Two lines are perpendicular to the same line are ......... to each other.

Two lines are said to be perpendicular to each other if they intersect at a . . . . . . . . . .. .