radix

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Usernameradix
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 #2
avatar+14538 
+3
Jan 22, 2015
 #1
avatar+14538 
+5
Jan 22, 2015
 #1
avatar+14538 
+5

Hallo Anonymous,


mit diesem Rechner kannst du selber die fehlenden Werte berechnen:


http://www.schulminator.com/mathematik/kreisberechnung


d) gegeben: A = 78,5 m²      A=r²*pi    =>    $${\mathtt{r}} = {\sqrt{{\frac{{\mathtt{A}}}{{\mathtt{\pi}}}}}}$$        $${\mathtt{r}} = {\sqrt{{\frac{{\mathtt{78.5}}}{{\mathtt{\pi}}}}}} \Rightarrow {\mathtt{r}} = {\mathtt{4.998\: \!732\: \!445\: \!873\: \!411}}$$


c) gegeben: A = 10 a = 1000 m²      =>    $${\mathtt{r}} = {\sqrt{{\frac{{\mathtt{1\,000}}}{{\mathtt{\pi}}}}}} \Rightarrow {\mathtt{r}} = {\mathtt{17.841\: \!241\: \!161\: \!527\: \!712}}$$


    r = 17,84 m   ;    d=2*r = $${\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{17.84}} = {\frac{{\mathtt{892}}}{{\mathtt{25}}}} = {\mathtt{35.68}}$$ 


   U = d*pi  = $${\mathtt{35.68}}{\mathtt{\,\times\,}}{\mathtt{\pi}} = {\mathtt{112.092\: \!025\: \!880\: \!083\: \!822\: \!7}}$$


Gruß radix !

Jan 22, 2015