$\frac{25}{2}$ sq. units

25 sq. units

$\frac{25 \sqrt{5}}{2}$ sq. units

$25 \sqrt{5}$ sq. units

$\quad \frac{-2}{\sqrt{101}}, \frac{3}{\sqrt{101}}, \frac{8}{\sqrt{101}}$

$\frac{-3}{\sqrt{49}}, \frac{2}{\sqrt{49}}, \frac{6}{\sqrt{49}}$

$\quad \frac{-4}{\sqrt{101}}, \frac{-9}{\sqrt{101}}, \frac{2}{\sqrt{101}}$

$\frac{4}{22}, \frac{-12}{22}, \frac{18}{22}$

$\pm\left(\frac{3 \hat{\mathrm{i}}+\hat{\mathrm{j}}+\hat{\mathrm{k}}}{\sqrt{11}}\right)$

$\pm\left(\frac{-\hat{\mathrm{i}}+2 \hat{\mathrm{j}}+\hat{\mathrm{k}}}{\sqrt{6}}\right)$

$\pm\left(\frac{2 \hat{i}+\hat{j}+\hat{k}}{\sqrt{6}}\right)$

$\pm\left(\frac{\hat{\mathrm{i}}+\hat{\mathrm{j}}+\hat{\mathrm{k}}}{\sqrt{3}}\right)$