During the standard testing of a standard concrete cube, we have measured the following data: m=8136.1 g a= 151.3 mm b= 151.0 mm h= 149.2 mm F=987.5 KN Calculate the compressive strength of the concrete! Give your answer together with the unit. In case you have no unit, put a "-" character beside the value.

During the standard testing of a standard concrete cube, we have measured the following data: m=8136.1 g a= 151.3 mm b= 151.0 mm h= 149.2 mm F=987.5 KN Calculate the compressive strength of the concrete! Give your answer together with the unit. In case you have no unit, put a "-" character beside the value.