Odpowiedź:
1)
S₁ = 1 cm * 1 cm = 1 cm²
S₂ = 2 cm * 1 cm = 2 cm²
S₃ = 1/2 * 2,5 cm * 1 cm = 2,5 cm² : 2 = 1,25 cm²
S₄ = 1,5 cm * 4 cm = 6 cm²
2)
S₅ = 10 cm * 5 cm - (S₁ + S₂ + S₄) = 50 cm² - (1 + 2 + 6) cm² =
= 50 cm² - 9 cm² = 41 cm²
3)
S₆ = 1/2 * 10 cm * 4 cm = 1/25 * 40 cm² = 20 cm²
S₆/S₃ = 20 cm² : 1,25 cm² = 16
Obliczenie rzeczywistych pól oblicza się w kwadracie skali podobieństwa.
Ponieważ k = 1 : 50 , to k² = 2500
1')
S₁' = S₁ * k² = 1 cm² * 2500 = 2500 cm²
S₂' = S₂ * k² = 2 cm² * 2500 = 5000 cm²
S₃' = S₃ * k² = S₃ * 2500 = 1,25 cm² * 2500 = 3125 cm²
S₄' = S₄ * k² = 6 cm² * 2500 = 15000 cm²
2')
S₅' = 41 cm² * 2500 = 102500 cm² = 10,25 m²
3')
S₆' = S₆ * k² = 20 cm² * 2500 = 50000 cm² = 5 m²
S₆'/S₃' = 50000 cm² : 3125 cm² = 16
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Odpowiedź:
1)
S₁ = 1 cm * 1 cm = 1 cm²
S₂ = 2 cm * 1 cm = 2 cm²
S₃ = 1/2 * 2,5 cm * 1 cm = 2,5 cm² : 2 = 1,25 cm²
S₄ = 1,5 cm * 4 cm = 6 cm²
2)
S₅ = 10 cm * 5 cm - (S₁ + S₂ + S₄) = 50 cm² - (1 + 2 + 6) cm² =
= 50 cm² - 9 cm² = 41 cm²
3)
S₆ = 1/2 * 10 cm * 4 cm = 1/25 * 40 cm² = 20 cm²
S₆/S₃ = 20 cm² : 1,25 cm² = 16
Obliczenie rzeczywistych pól oblicza się w kwadracie skali podobieństwa.
Ponieważ k = 1 : 50 , to k² = 2500
1')
S₁' = S₁ * k² = 1 cm² * 2500 = 2500 cm²
S₂' = S₂ * k² = 2 cm² * 2500 = 5000 cm²
S₃' = S₃ * k² = S₃ * 2500 = 1,25 cm² * 2500 = 3125 cm²
S₄' = S₄ * k² = 6 cm² * 2500 = 15000 cm²
2')
S₅' = 41 cm² * 2500 = 102500 cm² = 10,25 m²
3')
S₆' = S₆ * k² = 20 cm² * 2500 = 50000 cm² = 5 m²
S₆'/S₃' = 50000 cm² : 3125 cm² = 16