Vector Algebra

If \([\bar{a} \bar{b} \bar{c}]=4\), then the volume (in cubic units) of the parallelopiped with \(\bar{a}+2 \bar{b}, \bar{b}+2 \bar{c}\) and \(\overline{\mathrm{c}}+2 \overline{\mathrm{a}}\) as coterminal edges, is