Question

a box is in the form of cuboid of dimensions ( 80*30*40) cm. the base the side faces and back faces are to be covered with a coloured paper. find the area of paper needed​

Answer 1

Answer:

5600

Step-by-step explanation:

Area of base face=80*40

=3200

Area of back face=80*30

= 2400

Total area needed =3200+2400

=5600

Answer 2

First as given in question we will get the curved surface area of the box formula as 2xH(L+B) so the equation is - 2x40(80+30)

Step-by-step explanation:

2x40 = 80
80+30=110
80x110=8800
so this is our area of the 4 sides now we need to take out the area of the base which is lxb
80x30=2400
now we will add the following
8800+2400+11200
so the area of the sheet needed is 11200cm²