Odpowiedź:
a) 2×6+2×7 = 26 cm
b) 2×3+2×2 = 10 cm
c) 2×10+2×7 = 34 cm <-- bo 70 mm = 7cm
d) 2×2,5+2×3,5 = 12cm
e) 2×25+2×45 = 140 cm = 14 dm
[tex]f)2*2\frac{1}{4} +2*8\frac{1}{2} =21cm[/tex]
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Odpowiedź:
a) 2×6+2×7 = 26 cm
b) 2×3+2×2 = 10 cm
c) 2×10+2×7 = 34 cm <-- bo 70 mm = 7cm
d) 2×2,5+2×3,5 = 12cm
e) 2×25+2×45 = 140 cm = 14 dm
[tex]f)2*2\frac{1}{4} +2*8\frac{1}{2} =21cm[/tex]