Question

a stack of 500 sheets of paper measuring 28 cm x 21 cm is 44.5 mm high and has a mass of 2090 g. what is the density of the paper in grams per cubic cm?

Answer 1

44.5*10^-3/1*10-2
44.5 mm = 4.45 cm
28*21*4.45= 2616.6 cm^3 =V
D=m/v
2090g/ 2616.6cm^3 = D
D= .798746 = .7987g/cm^3

Answer 2

Answer: The density of stack is
`0.08g/cm^3`

Step-by-step explanation:

To calculate the volume of cuboid, we use the equation:

`V=lbh`

where,

V = volume of cuboid

l = length of cuboid = 28 c

b = breadth of cuboid = 21 cm

h = height of cuboid = 44.5 cm

Putting values in above equation, we get:

`V=28* 21* 44.5=26166cm^3`

To calculate density of a substance, we use the equation:

`\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}`

We are given:

Mass of stack = 2090 g

Volume of stack =
`26166cm^3`

Putting values in above equation, we get:

`\text{Density of stack}=(2090g)/(26166cm^3)\\\\\text{Density of stack}=0.08g/cm^3`

Hence, the density of stack is
`0.08g/cm^3`