The total surface area of a regular tetrahedron with each edge of length √3 cm is -
Answer & explanation
Correct answer: option 3
T.S.A. of a tetrahedron
= 4 × \(\frac{(\sqrt {3})}{4}\) × (edge)2
= \(\sqrt {3}\)a2
= \(\sqrt {3}\) (\(\sqrt {3}\))2
= 3\(\sqrt { 3}\) cm2