Question

1.6 x
$1.6 \times \sqrt{2}$
2​

Answer 1

Step-by-step explanation:

13²=169

160=(13-Δ)²=169–26Δ+Δ²

9≈26Δ

Δ≈9/26≈0.346

√160≈13–0.346≈12.65

√1.6≈1.265