Answer:
5. A= pi [tex]r^{2}[/tex] r=radius d=diameter
C= pi 2r/ d
A= pi [tex]6^{2}[/tex]
A= 36pi
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C=pi 2(6)/12
C=12pi
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6. A=pi [tex]4^{2}[/tex]
A=16pi
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C=pi 2(4)/8
C=8pi
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Sorry I couldn't find the symbol for pi
