Tetrahedral pyramid

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

Correct answer:

s =  10.8628 cm

Step-by-step explanation:

a=6 cm h=10 cm  u=a 2=6 2=6 28.4853  s=h2+(u/2)2=102+(8.4853/2)2=118=10.8628 cm

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