Volume of a cuboid = LBH = 1560cm2
V = 15 x 8 x H = 1560
H = 156015×8 = 13cm
Total surface area of a cuboid = 2(LB + LH + BH)
= 2((15 x 8) + ( 15 x 13) + ( 8 x 13))
= 2(120 + 195 + 104) = 2(419) = 838 cm2