how much is 2 root 2 the whole square = Share with your friends Share 5 Pooja Khanna answered this 222=22×22=4×22=4×2=8answer 8 View Full Answer Hima Bindu answered this I guess the answer is 8. root 2 square is 2 2 square is 4 so, 4 x 2 = 8 7 The Mykey Siddharth answered this ( 2 /- 2 ) 2 = 4 /- 4 = 4 x 2 = 8. 7