Suma Pól = Pk + Pr + Pt = 80 cm²
Pk = x
Pt = 3x
Pr = 80 cm² * 30% = 80 cm² * 0,3 = 24 cm²
x + 3x + 24 cm² = 80 cm²
4x = 56 cm²
x = 14 cm²
Pk = 14 cm²
Pt = 3 * 14 cm² = 42 cm²
Pr = 24 cm²
Odp: Pole kwadratu ma 14 cm².
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Suma Pól = Pk + Pr + Pt = 80 cm²
Pk = x
Pt = 3x
Pr = 80 cm² * 30% = 80 cm² * 0,3 = 24 cm²
x + 3x + 24 cm² = 80 cm²
4x = 56 cm²
x = 14 cm²
Pk = 14 cm²
Pt = 3 * 14 cm² = 42 cm²
Pr = 24 cm²
Odp: Pole kwadratu ma 14 cm².