Oblicz przekatne rombu, którego obwod wynosi 25 cm a stosunek przekatnych 3:4.
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b (podstawa) = 54 cm
c (ramię) = 41 cm
54 - 36 = 18 / 2
9 kwadrat + h kwadrat = 41 kwadrat
81 + h kwadrat = 1681
h kwadrat = 1681-81
h kwadrat = 1600
h = pierwiastek z 1600
h = 40