Question

find LSA and TSA of a cuboidal box whose length is 10 cm breadth 6 cm height 4 cm

Answer 1

length = 10cm
breadth = 6cm
height = 4cm
So, TSA = 2(lb + bh + lh)
              = 2[(10*6) + (6*4) + (10*4)]
              = 2 [60 + 24 + 40]
              = 2 * 124
              = 248 sq. cm
And, LSA = 2h(l+b)
                = 2 * 4 (10 + 6)
                = 8 * 16
                = 128 sq. cm