prostokat o bokach dlugosci 8 cm , 6 cm jest podobny do prostokata o przekatnej 25 cm. Oblicz obwod i pole wiekszego prostokąta. :)
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8² + 6² = d²
d² = 64 + 36
d² = 100
d = 10cm ------ przekątna
k = 25cm / 10cm = 2,5
a` = 8cm * 2,5 = 20cm
b` = 6cm * 2,5 = 15cm
P = 20cm * 15cm = 300cm²
Ob = 2(20cm + 15cm) = 70cm