Question

1. you measure a block and find the length is 11.2 cm, the width is 4.3 cm, and the height is 1.6 cm. the mass of the block is 125.3 g. what is the density?

Explanation:

Step1: Calculate the volume of the block

The volume $V$ of a rectangular - block is given by $V = l\times w\times h$, where $l = 11.2$ cm, $w = 4.3$ cm and $h = 1.6$ cm.
$V=11.2\times4.3\times1.6$
$V = 11.2\times6.88=77.056$ $cm^{3}$

Step2: Calculate the density

The density $
ho$ is given by the formula $
ho=\frac{m}{V}$, where $m = 125.3$ g and $V = 77.056$ $cm^{3}$.
$
ho=\frac{125.3}{77.056}\approx1.63$ g/$cm^{3}$

Answer:

$1.63$ g/$cm^{3}$