Question 1064542
I'll do the first one. 
Use the same method for the remaining two.
I made both figures since you didn't provide one.
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*[illustration af8.JPG].
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Figure 1
{{{AB=0.5}}}
{{{BC=1.0}}}
AC is calculating using the Pythagorean theorem,
{{{AC^2=AB^2+BC^2}}}
{{{AC^2=(1/2)^2+1^2}}}
{{{AC^2=1/4+4/4}}}
{{{AC^2=5/4}}}
{{{AC=sqrt(5)/2}}}
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Figure 2,
{{{AB=0.5}}}
{{{AC=1}}}
{{{BC^2=AB^2+AC^2}}}
{{{BC=sqrt(5)/2}}}
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Now do the same process with the different lengths,