The radius of circle S = a/√2 and
The side of square T = √2*a
So, the question can be rephrased to Is pi*a*√2 > 10?
Given a > 2 then pi*a*√2 > pi*2*√2(~8.8). Insufficient to answer the question as1). The side of square R is greater than 2
pi*a*√2 > 8.8 doesn't mean that pi*a*√2 > 10.
Given √2*a > 4 (a > 2√2),then pi*a*√2 > pi*2√2*√2, i.e pi*a*√2 > ~12.5. Sufficient to answer the question Is pi*a*√2 > 10?2). The side of square T is greater then 4
IMO B
