ANSWER
10,800 arcminutes
EXPLANATION
Knowing that,
[tex]1degree=60arcminutes[/tex]And that if a circle has 360 degrees, then half the circle has,
[tex]\frac{360}{2}=180degrees[/tex]We can find how many arcminutes there are in half a circle,
[tex]180degrees\cdot\frac{60arcminutes}{1degree}=10,800arcminutes[/tex]Hence, there are 10,800 arcminutes in 50% of a circle.
