Odpowiedź:
x = I BC I
Mamy
[tex]\frac{x}{16} = \frac{45}{40} \\40 x = 16*45\\40 x = 720 / : 40\\x = 18[/tex]
I BC I = 18 cm
=============
y = I LM I
[tex]\frac{y}{12} = \frac{56}{48}[/tex]
48 y = 12*56
48 y = 672 / : 48
y = 14
więc
I LN I = 14 + 56 = 70
I LN I = 70 cm
===============
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Odpowiedź:
x = I BC I
Mamy
[tex]\frac{x}{16} = \frac{45}{40} \\40 x = 16*45\\40 x = 720 / : 40\\x = 18[/tex]
I BC I = 18 cm
=============
y = I LM I
Mamy
[tex]\frac{y}{12} = \frac{56}{48}[/tex]
48 y = 12*56
48 y = 672 / : 48
y = 14
więc
I LN I = 14 + 56 = 70
I LN I = 70 cm
===============
Szczegółowe wyjaśnienie: