Dany jest prostokąt o polu 25 cm². Krótszy bok prostokąta podobnego do danego w skali k=4 wynosi 16cm. Oblicz obwody obu prostokątów .
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a * b = 25
k = 4, b1 = 16
a1/b1 = 4 a1 = 64
2a1 + 2b1 = 160cm
a1/a = k
64/a = 4
a = 16
b1/b = k
16/b = 4
b = 4
2b + 2a = 40 cm.
Proszę ;**