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1/2 = h/4
2h = 4/:2
h = 2
P=ah
P= 4*2
P=8 cm^2
Bardzo prosze :PP
1/2 = h/4
proporcja:
1 --- h
2 --- 4
2h = 4 /:2
h = 2
P = ah
P = 4 x 2
P = 8 [cm²]