V = L x B x HV = 2x×x×x=2x3= 54cm3i.e. 2x3 = 54x3 = 542 = 27x = 3√27x = 3L = 2x i.e. 2 x 3 = 6cmB = x i.e. x = 3cmH = x i.e. x = 3cmbut A = 2(LB + LH + BH) = 2(6 x 3) + (6 x 3) + (3 x 3) = 2(18 + 18 + 9) = 2(45)= 90cm2