`C_(1):x^(2)+y^(2)=r^(2)and C_(2):(x^(2))/(16)+(y^(2))/(9)=1` interset at four distinct points A,B,C, and D. Their common tangents form a peaallelogram A'B'C'D'.
if A'B'C'D' is a square, then r is equal to

C_(1):x^(2)+y^(2)=r^(2)and C_(2):(x^(2))/(16)+(y^(2))/(9)=1 interset at four distinct points A,B,C, and D. Their common tangents form a parellelogram A'B'C'D'. if A'B'C'D' is a square, then r is equal to

C_(1):x^(2)+y^(2)=r^(2)and C_(2):(x^(2))/(16)+(y^(2))/(9)=1 interset at four distinct points A,B,C, and D. Their common tangents form a parellelogram A'B'C'D'. if A'B'C'D' is a square, then r is equal to

C_(1):x^(2)+y^(2)=r^(2)and C_(2):(x^(2))/(16)+(y^(2))/(9)=1 interset at four distinct points A,B,C, and D. Their common tangents form a peaallelogram A'B'C'D'. If A'B'C'D' is a square, then the ratio of the area of circle C_(1) to the area of circumcircle of DeltaA'B'C' is

Curves C_1:x^(2)+y^(2)=r^(2) and C_2:x^(2)/16+y^(2)/9=1 intersect at four distinct points A,B,C and D. Their common tangents from a parallelogram PQRS. Q. If ABCD is square, then the value of 25r^(2) is

If the points A(-2,-1),B(1,0),C(a,3) and D(1,b) form a parallelogram ABCD, Then the values of a and b are

If (x)/(a)+(y)/(b)=1 and (x)/(c)+(y)/(d)=1 intersects the circle at four concyclic points and a^(2)+c^(2)=b^(2)+d^(2). these lines intersects at

Show that the points A(3,5),B(6,0), C(1,-3) and D(-2,2) are the vertices of a square ABCD.

If (a,(1)/(a)),(b(.1)/(b)),(c,(1)/(c)),(d,(1)/(d)) are four distinct points on a circle of radius 4 units then,abcd is equal to: