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P=4
P=(a*h)/2
4=(a*4,8)/2 // *2
8=a*4,8 //*4,8
a= 8/4,8
a= 5/3 =1,2/3
p trojkata= ah/2
4=4.8h/2 /razy 2 (wszysko)
8=4.8h /:4.8
8/4.8= h
h= 10/6 (cm)
2
p kwadratu = a do potegi 2
a do pot. 2=64
a=pierwiastek z 64
pierwiastek z 64=8
O= 4a
O= 4 razy 8= 32 (cm)