Respostas

2013-08-29T19:47:14-03:00
A) p = 4*L 
16 cm = 4L
L= 16 cm/4 = 4cm

b) P=3*L
24 cm = 3L
L = 8 cm
h = (L/2)*1.73
h = (8/2)*1,73
h = 6,92 cm

c) D² = L²+L²
D² = 2L²
(3raiz de 2)² = 2L²
18 = 2L²
L² = 18/2
L = raiz de 9
L = 3 cm
P = 4*L
P = 12 cm
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