A parabolic grassed water channel $8 \mathrm{~m}$ wide at the top and $60 \mathrm{~cm}$ deep is laid on a slope of $3 \%$. Assuming the value of 'n' in Manning's formula as $0.04 \mathrm{~m}^{-1 / 3} \mathrm{~s}$, the discharge capacity (in $\mathrm{m}^{3} \mathrm{~s}^{-1}$ ) of the channel (rounded off to two decimal places) is____________
A parabolic grassed water channel $8 \mathrm{~m}$ wide at the top and $60 \mathrm{~cm}$ deep is laid on a slope of $3 \%$. Assuming the value of 'n' in Manning's formula as $0.04 \mathrm{~m}^{-1 / 3} \mathrm{~s}$, the discharge capacity (in $\mathrm{m}^{3} \mathrm{~s}^{-1}$ ) of the channel (rounded off to two decimal places) is____________