I need to get volume of few bodies
I have following things:
d(diameter)=3,500mm
h(height)=5,505mm
I have formula d^2*π*h/4
The problem is I need to take care of significant digits which I don't understand.
Next problem for the same body after that is with density ρ=m/V. I also need to watch out for significant digits.
I have the mass of 414g.
If anyone knows this please answer.
P.S. It would be helpful for me if you write density in g/cm^3 and in kg/m^3.
+502 \(d^2*π*h/4\) = 3,5002 * \(π\) *5505 /4= 15132659.11 considering u need the volume then u should round the answer to 4 s.f which will be around 15130000 mm3 . Now if u want the answer in either cm3 or m3 then just use the basic S.I units to convert the answer.
Next problem
15130000 mm3 = 15130 cm3
Density = \(\rho=m/V\)
= \(\rho= 414/15130\)
= \(\rho= 0.027 gcm^-3 \) or \(27.36 kgm^-3 \)
For the first problem I divided the equation by 4 cuz i dont know if only the h is being divided by 4 or the whole equation.
If only the h is being divided by 4 then all the answers will be changed.
Will convert the units from mm to meters.
1 meter =1,000 mm
3,500/1,000=3.5m
5,505/1,000=5.505m
V = d^2*π*h/4 - This is the volume of a cylinder.
V =3.5^2*3.141592*5.505/4
V =52.964 m^3
Density = Mass/Volume
414g / 1,000 =0.414 kg.
Density =0.414/52.964
Density =0.00782 kg/m^3
