4.
l = 27
p = 5/3 . 27= 45
t = 7/3 . 27 = 63
LP balok =
2 x (pl+pt+lt)
2 x (45.27+45.63+27.63)
2 x (1.215+2.835+1.701)
2 x 5.751 = 11.502 cm²
5.
v = 2.744
s= ³√2744
s = 14
p = 14 x 2 = 28
l = 14 t = 14
Lp = 2 ( p x l + p x t + l x t )
= 2 ( 28 x 14 + 28 x 14 + 14 x 14 )
= 2 ( 392 + 392 + 196 )
= 2 ( 980) = 1960
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4.
l = 27
p = 5/3 . 27= 45
t = 7/3 . 27 = 63
LP balok =
2 x (pl+pt+lt)
2 x (45.27+45.63+27.63)
2 x (1.215+2.835+1.701)
2 x 5.751 = 11.502 cm²
5.
v = 2.744
s= ³√2744
s = 14
p = 14 x 2 = 28
l = 14 t = 14
Lp = 2 ( p x l + p x t + l x t )
= 2 ( 28 x 14 + 28 x 14 + 14 x 14 )
= 2 ( 392 + 392 + 196 )
= 2 ( 980) = 1960