The diameter of circle is d = 16 cm.
The area of one peice is equal to one-eight of area of circle with diameter d = 16.
Determine the area of one peice of circle.
[tex]\begin{gathered} A=\frac{1}{8}\cdot\frac{\pi}{4}(16)^2 \\ =\frac{32\pi}{4} \\ =8\pi \end{gathered}[/tex]Thus area of one peice is,
[tex]8\pi[/tex]