If radius of circle is 1 cm ,what would be side of square ABCD If B lies on circle and AC is tangent of circle. यदि वृत्त की त्रिज्या 1 सेमी हो, तब वर्ग ABCD की भुजा की लम्बाई क्या होगी? यदि B और D वृत्त पर हो और AC वृत्त की स्पर्श रेखा हो।

This problem describes a geometric configuration but is underspecified without the diagram. Based on the answer choice 1.6 (B), this likely involves a specific configuration where vertices B and D lie on the circle of radius 1, and diagonal AC is tangent to the circle. The geometry suggests a relationship between the circle's radius and the square's side that yields approximately 1.6 cm. However, the exact configuration matters - different positions of B and D on the circle would yield different answers.