Question

9. Find the area of the cardboard required to make an open box of length 28 cm, breadth 0.5 m and height 0.2 m
​

Answer 1

Answer:

the length of the open box=0.28m

h=0.2m

b=0.5m

area of the card board is= 2(lb+bh+hl)

=2(0.28×0.5+0.5×0.2+0.2×0.28)

=2(0.140+0.1+0.056)

=2×0.296

=0.592