Volume of a tetrahedron and a parallelepiped Calculator

Calculates the volumes of a tetrahedron and a parallelepiped given four vertices.

 vertex A ( ,,) vertex B ( ,,) vertex C ( ,,) vertex D ( ,,) 6digit10digit14digit18digit22digit26digit30digit34digit38digit42digit46digit50digit volume Vp of a parallelepiped volume Vt of a tetrahedron
 $\normal Parallelepiped\ and\ Tetrahedron\\\vspace{5}(1)\ V_p=\vec{AD}\cdot(\vec{AB}\times\vec{AC})\\{\small \hspace{18}= (x_4-x_1)[(y_2-y_1)(z_3-z_1)-(z_2-z_1)(y_3-y_1)] \\\hspace{18}+(y_4-y_1)[(z_2-z_1)(x_3-x_1)-(x_2-x_1)(z_3-z_1)] \\\hspace{18}+(z_4-z_1)[(x_2-x_1)(y_3-y_1)-(y_2-y_1)(x_3-x_1)]} \\\vspace{5}(2)\ V_t={\large\frac{V_p}{6}}\\$

Volume of a tetrahedron and a parallelepiped
 [1-10] /32 Disp-Num5103050100200
[1]  2019/01/04 03:43   Male / Under 20 years old / Elementary school/ Junior high-school student / Very /
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Vp should be written with a subscript to avoid confusion with V*p
[2]  2018/10/05 10:53   Male / 30 years old level / High-school/ University/ Grad student / Very /
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[3]  2018/08/07 20:29   Female / 20 years old level / A teacher / A researcher / Very /
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[4]  2018/01/26 05:40   Male / Under 20 years old / High-school/ University/ Grad student / Very /
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[5]  2017/11/08 12:39   Male / - / High-school/ University/ Grad student / Very /
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for fun
[6]  2017/11/01 11:44   Male / 20 years old level / High-school/ University/ Grad student / - /
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Checking assignment computations
[7]  2017/08/08 02:29   Female / Under 20 years old / High-school/ University/ Grad student / Not at All /
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checking my homework
[8]  2017/07/13 11:08   Male / 30 years old level / High-school/ University/ Grad student / Useful /
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Used this to check my answers.
[9]  2017/04/25 02:04   Male / 20 years old level / High-school/ University/ Grad student / Very /
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[10]  2017/02/27 05:43   Male / Under 20 years old / High-school/ University/ Grad student / Useful /
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Checking answers on my homework for Calc III

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