Answer
$$
\Delta p=p_{\text {fect }}-p_{\text {brain }}=312 \text { torr } \approx 3.1 \times 10^{2} \text { torr. }
$$
Work Step by Step
The rise in the blood pressure at the brain as the giraffe take down its head to the level of its feet is
$$
\Delta p=p_{\text {fect }}-p_{\text {brain }}$$$$=406 \text { torr }-94 \text { torr }$$$$=312 \text { torr } \approx 3.1 \times 10^{2} \text { torr. }
$$
