Obwód:
O = 2 · (a + 7) + 2 · 8
O = 2a + 14 + 16
O = 2a + 30
Pole:
P = 7 · 8 + 5a
P = 56 + 5a
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Obwód:
O = 2 · (a + 7) + 2 · 8
O = 2a + 14 + 16
O = 2a + 30
Pole:
P = 7 · 8 + 5a
P = 56 + 5a