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a=dł.uzsza podstawa
b= krótsza=10
c=dł. ramienia=10
b=c
obwód=a+b+2c
a+3b=52
a+3*10=52
a=52-30
a=22cm
a=b+2x
22=10+2x
2x=22-10
2x=12
x=6cm
h=wysokosc
h²+x²=c²
h²=10²-6²
h=√64
h=8cm
pole=1/2(a+b)h=1/2(22+10)*8=128cm²
2]
d=a√2
16=a√2
a=16/√2
a=16√2/2
a=8√2= dł. boku