how much is 2 root 2 the whole square = Share with your friends Share 4 Pooja Khanna answered this ${\left(2\sqrt{2}\right)}^{2}\phantom{\rule{0ex}{0ex}}=2\sqrt{2}\times 2\sqrt{2}\phantom{\rule{0ex}{0ex}}=4\times {\left(\sqrt{2}\right)}^{2}\phantom{\rule{0ex}{0ex}}=4\times 2\phantom{\rule{0ex}{0ex}}=8\left(\mathrm{answer}\right)$ 7 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 6 The Mykey Siddharth answered this ( 2 /- 2 ) 2 = 4 /- 4 = 4 x 2 = 8. 6