Two circles are externally tangent. Lines PAB and PA'B' are common tangents with A and A' on the smaller circle B and B' on the larger circle. If PA = AB = 4, then find the radius of smaller circle

Two circles are externally tangent. Lines PAB and PA'B' are common tangents with A and A' on the smaller circle and B' and B' on the larger circle. If PA = AB = 4 , then area of the smaller circle, is

Two circles are externally tangent. Lines PAB and PA'B' are common tangents with A and A' on the smaller circle and B' and B' on the larger circle. If PA = AB = 4 , then area of the smaller circle, is

Two circle are externally tangent. Lines PAB and P A 'B ' are common tangents with A and A ' on the smaller circle and B and B ' on the larger circle. If PA=AB=4, then the square of the radius of the circle is___________

Two circle are externally tangent. Lines PAB and P A 'B ' are common tangents with A and A ' on the smaller circle and B and B ' on the larger circle. If PA=AB=4, then the square of the radius of the circle is___________

Two circle are externally tangent.Lines PAB and PA'B' are common tangents with A and A' on the smaller circle and B' and B' the on the larger circler circle and B=4 then the square of the radius of the circle is

Two circle are externally tangent. Lines P A B and P A ' B ' are common tangents with Aa n dA ' on the smaller circle and B^(prime)a n dB ' the on the larger circle. If P A=A B=4, then the square of the radius of the circle is___________

In two concentric circles, a chord of length 8cm of the larger circle touches the smaller circle. If the radius of the larger circle is 5cm then find the radius of the smaller circle.

Two circles touch each other externally at point P.A common tangent AB is drawn touching the circles at A and B.Find /_APB .

Two circles touch externally at P. A direct common tangent AB to two circles touch the circles at A and B. Then the measure of angleAPB is

O is the centre of the smaller circle,O' is the centre of bigger circle.CD is tangent to the smaller circle,Find the radius of the smaller circle.