Odpowiedź:
2cm², 3cm², 4,125cm², 2,5cm²
Obliczenia:
1.
(2cm × 2cm) : 2 = 4cm² : 2 = 2cm²
2.
(3cm × 3cm) : 2 = 6cm² : 2 = 3cm²
3.
((2,5cm + 3cm) × 1,5cm) : 2 = (5,5cm × 1,5cm) : 2 = 8,25cm² : 2 = 4,125cm²
4.
2,5cm × 1cm = 2,5cm²
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Odpowiedź:
2cm², 3cm², 4,125cm², 2,5cm²
Obliczenia:
1.
(2cm × 2cm) : 2 = 4cm² : 2 = 2cm²
2.
(3cm × 3cm) : 2 = 6cm² : 2 = 3cm²
3.
((2,5cm + 3cm) × 1,5cm) : 2 = (5,5cm × 1,5cm) : 2 = 8,25cm² : 2 = 4,125cm²
4.
2,5cm × 1cm = 2,5cm²