Odpowiedzi

2010-02-15T15:54:55+01:00
A)

d = a√2
d = 4√2

b)
d² = 5² + 10²
d² = 25 + 100
d² = 125
d = √125
d = √5*√25
d = 5√5

c)
a² = (½e)² + (½f)²
a² = 5² + 3²
a² = 25+9
a² = 34
a = √34