Question

a box without lid is made of 3 cm thick wood whose external Length breadth and height are 146 cm and 16 cm and 83 CM respectively find total surface area of inner side​

Answer 1

Answer:

For internal body,

L=146-6=140cm

B=116-6=110 cm

H=83-3=80 cm

area painted = LB+2BH+2HL= 140*110+2*110*80+2*80*140

=15400+17600+22400=55400cm²

cost =2*55400/1000=110.8