yes in cm³
we need transfor un m³
Probably made some mistakes but here goes.
After 8 years I got
height = 2431.423973
circumference = 68.70790098
(note: haven't rounded until right at the end)
Thus radius of the base = 10.93520207
area of the base = 375.6673905
and cone volume = 304468.8997 cm cubed
I then used M/V = M1/V1 since density will be the same
had to multiply cone volume by 10^-6
gave me a mass of 161.3685168 kg
which I rounded to 161
I got 1671.08 cm, what did I do wrong?
I am obviously doing something wrong so can someone just tell me what you are getting as a final answer?? I am so confused at this point
Please help!!
misspelt wrote:Probably made some mistakes but here goes.
After 8 years I got
height = 2431.423973
circumference = 68.70790098
(note: haven't rounded until right at the end)
Thus radius of the base = 10.93520207
area of the base = 375.6673905
and cone volume = 304468.8997 cm cubed
I then used M/V = M1/V1 since density will be the same
had to multiply cone volume by 10^-6
gave me a mass of 161.3685168 kg
which I rounded to 161
the mass has to be higher than the density which is 530 so i think you made a mistake
But it's 530kgs per cubic meter so I got
1613685.16841
i have one answer but im no sure totality =/
the volumen is 2994661.17cm³???
in m³= 2.99??
[If the density of the wood is 530 kilogrammes per cubic metre, how many kilogrammes did the tree's trunk weigh this past New Year's Eve?]
What part does this play and how do you figure it out? Could someone give the equation please? Thank you.
bullseye what did you get for your final answer?? Please reply!
I dont know if this is right... but I got 4984.9067 KG
that was using the 1/3 area of base x height to get volume
I'm new here. Hi everyone!
I get 2423.05 cm for height and 68.7078 cm for circumference.
katie8123 wrote:misspelt wrote:Probably made some mistakes but here goes.
After 8 years I got
height = 2431.423973
circumference = 68.70790098
(note: haven't rounded until right at the end)
Thus radius of the base = 10.93520207
area of the base = 375.6673905
and cone volume = 304468.8997 cm cubed
I then used M/V = M1/V1 since density will be the same
had to multiply cone volume by 10^-6
gave me a mass of 161.3685168 kg
which I rounded to 161
the mass has to be higher than the density which is 530 so i think you made a mistake
Yes your probably right, but my tree volume was only 0.3044688997 m^3
K... my answer is wrong.... got the wrong value for Base area
still working, will get back to you in a few!
I'm behind but this last NYE was #10 no? So year 2-10 is nine years not 8?
bullseye, why did you change your first number from 1671.08 to a higher #?
I just did the calculation and the 1671.08 number is correct. My daughter is a math major and she is helping me now!
When using the equation for volume of a cone (1/3*pi*r^2*h) I get 303686cm^3. Then, for density (kg/m^3) *volume (cm^3) is equal to mass/weight, I changed the kilograms to grams (so I could use cm^3) by multiplying by 1000. then when I got the answer back, I divided by 1000 to get gack to kilograms. My equations:
Volume: 1/3*3.14159*(10.49cm^2)*2423.05cm=303686cm^3
then 530 kg = 530000 grams
530000g/cm^3*303686cm^3=160953580000grams
divide that by 1000 to get kg=160953580
That seems a bit big. what do you think?
OK BEFORE WE CAN GET THE RIGHT ANSWER, WE NEED TO ALL AGREE ON HOW MANY YEARS THERE HAVE BEEN!
I haven't been on here but 4 years so I'm not sure. That is going to make a heck of alot of difference in the answer!
Once we know for sure the years I think I can do the rest of the Math now.
I changed it from 1671.08 to 2423.06 because the first time I only did it for 7 years growth instead of 8
tonialiani wrote:When using the equation for volume of a cone (1/3*pi*r^2*h) I get 303686cm^3. Then, for density (kg/m^3) *volume (cm^3) is equal to mass/weight, I changed the kilograms to grams (so I could use cm^3) by multiplying by 1000. then when I got the answer back, I divided by 1000 to get gack to kilograms. My equations:
Volume: 1/3*3.14159*(10.49cm^2)*2423.05cm=303686cm^3
then 530 kg = 530000 grams
530000g/cm^3*303686cm^3=160953580000grams
divide that by 1000 to get kg=160953580
That seems a bit big. what do you think?
the diameter is 68.7079..., the radius isn´t 34.35???
