A Problem on Volume Calculation

orchiming shared this question 6 years ago
Answered

Hi,


In the attached file prepared by ver 4.9.119, the volume of Pyramid ABCD is shown to be 6734.49 cm³ when ∠ADC = 90°. I do the calculation myself and the value is correct. However, when I drag the slider to fold the triangle and change the value of ∠ADC, the volume becomes incorrect. When I change the value of ∠ADC back to 90°, the volume becomes 6738.22 cm³ . Note that if I save at this value of∠ADC and reopen the file the volume becomes correct again.


Can the problem be solved?


Regards,

Anthony

https://ggbm.at/561597

Comments (5)

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Hi,


Bad bug : I'll try to fix it quickly.


Workaround for now : you can use

    DB * Area[Polygon[A, C, D]] / 3

for this particular case.


Thanks for report !


Cheers,

Mathieu

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Hi Mathieu,


No need to hurry, just take your time, and thank you very much for your effort!


Anthony

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Hi,


Thanks ! By the way, should be fixed for next release ;)


Cheers,

Mathieu

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I think the bug is fixed in version 4.9.121 ;)


Mathieu

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Yes, I have just tried and the volume is correct now. Thank you very much!


Anthony

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