Odpowiedzi

2009-12-21T11:24:04+01:00
H + x = 17
h + (28-x) = 25

h + x = 289
h + 784 - 56 x + x = 625

h + x = 289
h - 56 x + x = -159

56 x = 448 \ :56
x = 8

h + 8 = 17
h = 289 - 64
h = 225
h = 15

p = (a+b) × h
p = (16+44) × 15
p = 30 × 15
p = 450 cm2