What will be the compressive strength of a 150 mm concrete cylinder if the failure load is 500 kN?

What will be the compressive strength of a 150 mm concrete cylinder if

1.	What will be the compressive strength of a 150 mm concrete cylinder if the failure load is 500 kN?
A.	0.2829 N/mm<sup>2</sup>
B.	0.02829 N/mm<sup>2</sup>
C.	0.02829 10<sup>-3</sup> N/mm<sup>2</sup>
D.	28.29 N/mm<sup>2</sup>
Answer» E.