The sides of a tetrahedron are 4 equilateral triangles. If the base of each triangle is 8cm and its heights 6.9cm, please help me to calculate the surface are of the tetrahedron.

Answer 1

Area of each triangular face
= (1/2)base*height

Surface area of tetrahedron
= 4*area of each face.

Answer 2

thank you

Answer 3

You're welcome!

Answer 4

is this for mo