Question

uiven two boxes. Which box will need more paper to cover
You are given tw.
box?
30 cm
40 cm
50 cm
40 cm
Fig. 14.16​

Answer 1

Answer:

we need to cover boxes l, therefore, we find surface area.

so the formula for cuboid is :

= 2(lb + bh + lh)

= 2(40 × 50 + 50 × 30 + 40 × 30)

= 2(2000 + 1500 + 1200)

= 2(4700)

=9400 cm^2

now the formula for cube is :

= 6a^2

= 6(40 × 40)

= 6(1600)

= 9600 cm^2

therefore, we need more paper to cover cube box as 9600 is greater than 9400