Vector Algebra

If area of the parallelogram with \(\bar{a}\) and \(\bar{b}\) as two adjacent sides is 20 square units, then the area of the parallelogram having \(3 \overline{\mathrm{a}}+\overline{\mathrm{b}}\) and \(2 \overline{\mathrm{a}}+3 \overline{\mathrm{b}}\) as two adjacent sides in square units is