Tetrahedron 5844

Calculate the surface area of ​​a regular tetrahedron whose height is 9 cm.

Correct answer:

S =  210.4442 cm2

Step-by-step explanation:

h=9 cm a=3 h/6=3 9/611.0227 cm S1=3/4 a2=3/4 11.0227252.611 cm2 S=4 S1=4 52.611=210.4442 cm2



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