A 3 kg pine board is 20 cm wide, 2 cm thick, and 2 m long. What is the density of the board?

Question

A. 240 kg/m3
B. 267 kg/m3
C. 469 kg/m3
D. 375 kg/m3

Answer 1

Ok, you know that density is :

D = mass / volume

Mass = 3kg

volume = 20/100*2/100*2 = 80*10^-4

D = (3 / 80)*10^4 = 375 kg / m^3

Hope it helps

Answer 2

Formula:Density = mass/volume
step 1: find volume of wood = 0.2m*0.02m*2m=0.008m3
substitute mass =3kg and volume =0.008m3 in above equation.
Density =3/0.008= 375kg/m3

Answer 3

You can't fool me on this one .
Answer, Heavy as all get out.