Odpowiedź:
Potrzeba 7 400 cm² szkła.
Szczegółowe wyjaśnienie:
a = 60 cm
b = 40 cm
H = 25 cm
P = ?
P = Pp + Pb
Pp = a × b = 60 cm × 40 cm = 2 400 cm²
Pb = 2aH + 2bH = 2H(a + b)
Pb = 2 × 25 cm × (60 + 40)cm = 50 cm × 100 cm = 5 000 cm²
P = 2 400 cm² + 5 000 cm²
P = 7 400 cm²
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Odpowiedź:
Potrzeba 7 400 cm² szkła.
Szczegółowe wyjaśnienie:
a = 60 cm
b = 40 cm
H = 25 cm
P = ?
P = Pp + Pb
Pp = a × b = 60 cm × 40 cm = 2 400 cm²
Pb = 2aH + 2bH = 2H(a + b)
Pb = 2 × 25 cm × (60 + 40)cm = 50 cm × 100 cm = 5 000 cm²
P = 2 400 cm² + 5 000 cm²
P = 7 400 cm²