how do i solve 8Sq'd1.3168? The 8 is on top of the left hand wing of the sq'd sign.

Do you mean

$${\sqrt[{{\mathtt{{\mathtt{8}}}}}]{{\mathtt{1.316\: \!8}}}} = {\mathtt{1.034\: \!999\: \!112\: \!125\: \!890\: \!8}}$$

This is an approximation.