Let P be point on the circumference on the circle. perpendiculars PA and PB are drawn to point A and B on two mutually perpendicular diameter . If AB=36cm , the diameter of the circle is:

The circumference of a circle is 22 cm. Find the diameter of the circle.

Suppose a point C is on straight line AB and two circles of diameter AC and AB are drawn. A point P is on the circumference of the circle with diameter AB. If AP meet to other circle at Q then which is correct-

From an external point two tangents PA and PB are drawn to the circle with center O. Prove that OP is perpendicular bisector of AB.

P is a point outside a circle with centre O, and it is 14 cm away from the centre. A secant PAB drawn from P intersects the circle at the points A and B such that PA = 10 cm and PB = 16 cm. The diameter of the Circle is:

Two circles of radius 1 cm touch at point P. A third circle is drawn through the points A, B and C such that PA is the diameter of the first circle and BC perpendicular to AP is the diameter of the second circle. The radius of the third circle in cm.

From a point P, two tangents PA and PB are drawn to a circle with centre O. If OP is equal to diameter of the circle then angleAPB is___