Question

surface of a cabinet of measures 1m*2m*1.5m. find the surface area

Answer 1

surface area of cuboid = 2(lb+bh+hl)
                                 =2(1×2+2×1.5+1.5×1)
                                 =13

Answer 2

Answer:

$area = l \times b \\ = 1 \times 2 \\ = 2 {m}^{2} \\ surface \: area \: = 2(lb + bh + lh) \\ 2(2 \times 1 + 1 \times 1.5 + 2 \times 1.5) \\ 13 {m}^{2} \\ 13 - 2 = 11 {m}^{2}$

hope it will help you