Tetrahedral pyramid

It is given a regular tetrahedral pyramid with base edge 6 cm and the height of the pyramid 10 cm. Calculate the length of its side edges.

Correct result:

s =  10.8628 cm

Solution:

a=6 cm h=10 cm  u=a⋅ 2=6⋅ 2=6 2≐8.4853  s=h2+(u/2)2=102+(8.4853/2)2=118=10.8628 cm

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