Obw = 34 cm
Obw = 2*a + b
a = b+2
b = a -2
Obw = 2 (b+2) + b
34 cm = 2b + 4 + b
34 cm = 3b +4
30 cm = 3b
10 cm = b
a = 12 cm
h² = a² - ½b²
h² = (12cm)² + (5cm)²
h² = 144cm² + 25cm²
h² = 169cm²
h = 13 cm
P = ½ b * h
P = ½ 10 cm * 13 cm
P = 5 cm * 13 cm
P = 65 cm²
Odp: Pole wynosi 65 cm².
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Obw = 34 cm
Obw = 2*a + b
a = b+2
b = a -2
Obw = 2 (b+2) + b
34 cm = 2b + 4 + b
34 cm = 3b +4
30 cm = 3b
10 cm = b
a = b+2
a = 12 cm
h² = a² - ½b²
h² = (12cm)² + (5cm)²
h² = 144cm² + 25cm²
h² = 169cm²
h = 13 cm
P = ½ b * h
P = ½ 10 cm * 13 cm
P = 5 cm * 13 cm
P = 65 cm²
Odp: Pole wynosi 65 cm².