Question

qual o volume de um tetraedro cuja aresta mede 12cm? ( use $\sqrt2$2= 1,4)

Answer 1

Calculamos o volume de um tetraedro

Vol. = \/ 2
.............___ x a^3
................12

Vol. = \/ 2
.............___ x ( 12 )^3
.............. 12

Vol. = \/ 2
............___ x ( 1.728)
..............12

Vol. = 1.728 . \/ 2
.......... ________
...................12

Vol. = 144.\/ 2...(\/ 2 = 1,4)

Vol. = 144 (1,4)

Vol. = 201,60cm^3