The following question is accompanied by three statements (A), (B) and (C). You have to determine which statement(s) is/are sufficient/necessary to answer the question.
Find the length of the side of a square.
A. Total cost of flooring the square is Rs.1,000 at the rate of Rs.40 per square meter.
B. A rectangle whose perimeter is 20 m is equal to the perimeter of the square.
C. A square of area equal to 50 sq. m can be made on the diagonal of the given square.