There's no way to calculate his height using the given information,
unless we were also given his Body Mass Index.
However, I'm going to take a big jump here, and assume that you
meant to ask for his "weight" instead of his "height".
Weight = (mass) x (gravity)
On Earth, the acceleration of gravity is about 9.8m/s².
Weight = (88 kg) x (9.8 m/s²) = 862.4 kg-m/sec² =
862.4 newtons (about 194 pounds)