## timo86m Group Title Calculate the mass of a rectangular solid that has a density of 2.53 g/cm3 and which measures 25 mm by 1.80 cm by 3.00 cm. Dont say in what but i assume grams one year ago one year ago

1. hfw Group Title

density = mass / volume $volume = 0.25cm * 1.8 cm * 3.00cm$ this is the volume of the rectangular solid and beware of units density = 2.53 g /cm3 So 2.53 = m / (.25 * 1.8 * 3) m = 1.87 g hope this is what you are looking for.

2. timo86m Group Title

2.5 cm not .25 Right?

3. rajathsbhat Group Title

yeah, 2.5 cm.

4. hfw Group Title

Sorry, it is 2.5 cm

5. UnkleRhaukus Group Title

$\frac mV=\rho$ $m=\rho\times V$$=2.53 \left[\frac{\text g}{{\text {cm}}^3}\right] \times 2.5[\text {cm}]\times1.80 [\text {cm}]\times3.00 [\text {cm}]$$=(2.53\times2.5\times1.8\times3)[\text g]$

6. timo86m Group Title

Thanks :) but you didn't have to do all that equation editing :P

7. UnkleRhaukus Group Title

did you get the right answer ?

8. timo86m Group Title

34.1550 g