\[S = 32\ га;\ \ a = 800\ м.\ \ \]
\[32\ га = 320\ 000\ м^{2}.\]
\[b = S\ :a = 320\ 000\ :800 =\]
\[= 400\ м.\]
\[P = 2 \cdot (a + b) =\]
\[= 2 \cdot (800 + 400) = 2 \cdot 1200 =\]
\[= 2400\ м.\]