Question

1. a sheet of metal is 2 cm wide, 10 cm tall, and 15 cm long. it was 4 grams. what is the density?

Explanation:

Step1: Calculate volume of metal sheet

The volume $V$ of a rectangular - shaped object (the metal sheet) is given by the formula $V = l\times w\times h$, where $l = 15$ cm, $w = 2$ cm and $h = 10$ cm. So, $V=15\times2\times10 = 300$ $cm^{3}$.

Step2: Calculate density

The density $
ho$ is given by the formula $
ho=\frac{m}{V}$, where $m = 4$ grams and $V = 300$ $cm^{3}$. So, $
ho=\frac{4}{300}=\frac{1}{75}\approx0.0133$ g/$cm^{3}$.

Answer:

$\frac{1}{75}$ g/$cm^{3}$ or approximately $0.0133$ g/$cm^{3}$