Since \(1\text{ ha}=10000\text{ m}^2\), multiply by \(10000\).

\(6\times10000=60000\).

Answer: \(60000\text{ m}^2\).

Since \(1\text{ ha}=10000\text{ m}^2\), multiply by \(10000\).

\(11.2\times10000=112000\).

Answer: \(112000\text{ m}^2\).

Since \(1\text{ ha}=10000\text{ m}^2\), multiply by \(10000\).

\(0.63\times10000=6300\).

Answer: \(6300\text{ m}^2\).

Since \(1\text{ ha}=10000\text{ m}^2\), multiply by \(10000\).

\(4.6\times10000=46000\).

Answer: \(46000\text{ m}^2\).

Since \(1\text{ ha}=10000\text{ m}^2\), multiply by \(10000\).

\(0.75\times10000=7500\).

Answer: \(7500\text{ m}^2\).

Since \(1\text{ ha}=10000\text{ m}^2\), divide by \(10000\).

\(70000\div10000=7\).

Answer: \(7\text{ ha}\).

Since \(1\text{ ha}=10000\text{ m}^2\), divide by \(10000\).

\(135000\div10000=13.5\).

Answer: \(13.5\text{ ha}\).

Since \(1\text{ ha}=10000\text{ m}^2\), divide by \(10000\).

\(8000\div10000=0.8\).

Answer: \(0.8\text{ ha}\).

Since \(1\text{ ha}=10000\text{ m}^2\), divide by \(10000\).

\(89000\div10000=8.9\).

Answer: \(8.9\text{ ha}\).

Since \(1\text{ ha}=10000\text{ m}^2\), divide by \(10000\).

\(900\div10000=0.09\).

Answer: \(0.09\text{ ha}\).