Odpowiedzi

2010-02-06T11:54:17+01:00
A=(-1,2)
C=(-4,-1)

P=(a+b)*h/2
a=8j
b=2j
h=3j
P=(8+2)*3/2=10*3/2=15j²
2010-02-06T12:00:11+01:00
B = (4,-1) a = (-4,-1)
d = (-1,2) c = (1,2)
P = (a + b) * h / 2
P = (8 j + 2 j) * 3j / 2
P = 10 j * 3 j / 2
P = 15 j ²