\(\dfrac{\sqrt{2}}{2}\)a
d(h,(scd))=a\(\dfrac{\sqrt{2}}{2}\)
\(\dfrac{a\sqrt{2}}{2}\)
\(\dfrac{\sqrt{2}}{2}\)a
\(\dfrac{a\sqrt{2}}{2}\)
\(\dfrac{a\sqrt{2}}{2}\)
\(\dfrac{a}{\sqrt{2}}\)
\(\dfrac{a}{\sqrt{2}}\)
\( { \sqrt{2}a \over 2}\)
\(\dfrac{a}{\sqrt{2}}\)