hallo means hello. some languages don't have the same slang as English
Answer:
zu
Explanation:
Das Telefon findet man <em><u>_zu_</u></em> Hause.
If you are ''in'' Home, so I mean ''dativ'' =>it should be zu Hause
but if you are ''going to'' Home ( a movement to home) => it should be nach Hause
if you still don't understand, you have to read articles about ''difference between nach Hause and zu Hause'', it's important. I can help you on comments.
Hope this helps ^-^
Do the number divided by 2 then x 3 so sarahs shadow is 4 ft tall