Question

pls frnds answer this question​

Answer 1

Answer:

Step-by-step explanation: l=80cm b=40cm h=40cm

area of side faces=40*40*2

                              =3200cmsq

area of base=80*40

                     =3200cmsq

area of back face=80*40=3200cmsq

total area=3200+3200+3200=9600cmsq

hence area of paper needed is 9600cmsq