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a=2b
2a+2b=24
4b+2b=24
6b=24
b=4
a=2*4=8
α=60⁰
P=a*b*sinα
P=4*8*√3/2=16√3
+ zalacznik
33.
h:
y=-x+b
-2+b=-3
b=-1
y=-x-1
y=x+2
x+2=-x-1
x+x=-1-2
2x=-3
x=-3/2
y=-3/2+2=1/2
D=(-3/2, 1/2)
B=(x,y)
1/2*(-4+x)=-3/2
-4+x=-3
x=1
1/2*(-2+y)=1/2
-2+y=1
y=3
B=(1,3)
a=|AB|, h=|CD|