Water is flowing FULL through a rectangular tunnel of size $3 \mathrm{~m}$ (width) $\times 2 \mathrm{~m}$ (height). The average velocity of flow is $1 \mathrm{~m} / \mathrm{s}$. The frictional head loss is observed to be $1 \mathrm{~m}$ per $\mathrm{km}$. Consider acceleration due to gravity $(\mathrm{g})$ as $10 \mathrm{~m} / \mathrm{s}^{2}$. The correct statement(s) is/are
- Hydraulic radius is $0.6 \mathrm{~m}$
- Darcy-Weisbach friction factor is $0.04$
- Hydraulic radius is $2 \mathrm{~m}$
- Darcy-Weisbach friction factor is $0.024$
