Rolls of foil are 302 mm wide and 0.018 mm thick. (The density of foil is 2.7 g/cm3.)

What maximum length of foil can be made from 1.19 kg of foil?

The length of foil will be 8107.81 cm or 81.7081 m.

Explanation:

Given dа ta:

Width of roll of foil = 302 mm

Height or thickness = 0.018 mm

Density of foil = 2.7 g/cm³

Mass of foil = 1.19 Kg

Length of foil = ?

Solution:

d = m / v

v = length (l) * width (w) * height (h)

First of we will convert the Kg into gram and mm into cm.

one Kg = 1000 g

1.19 * 1000 = 1190 g

one cm = 10 mm

302 / 10 = 30.2 cm

0.018 / 10 = 0.0018 cm

Now we will put the values in formula:

d = m / l * h * w

l = m / d * h * w

l = 1190 g / 2.7 g/cm³ * 30.2 cm * 0.0018 cm

l = 1190 g / 0.146772 g/cm

l = 8107.81 cm or 81.7081 m