Tetrahedral pyramid

Calculate the regular tetrahedral pyramid's volume and surface if the content area of the base is 20 cm2, and the deviation angle of the side edges from the plane of the base is 60 degrees.

Correct answer:

V =  36.51 cm3
S =  72.915 cm2

Step-by-step explanation:

b=h2+(a/2)2=5.47722+(4.4721/2)2=35 cm5.9161 cm  S2=a b/2=4.4721 5.9161/2=5 7 cm213.2288 cm2  S=4 S2+S1=4 13.2288+20=72.915 cm2

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Tips to related online calculators
Pythagorean theorem is the base for the right triangle calculator.
Tip: Our volume units converter will help you with the conversion of volume units.
See also our trigonometric triangle calculator.

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