a). l = 135 m
P = 3l = 135 × 3 = 405 cm
b ). P = 44 cm =>
=> l = 44 : 4 = 11 cm ( o latura )
c). L = 8 cm
l = 6 cm
P = 2 × L + 2 × l = 2 × 8 + 2 × 6 = 16 + 12 = 28 cm
Răspuns:
135*3=405cm
44/4=11cm
2*(8+6)=2*14=28cm
Explicație pas cu pas:
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a). l = 135 m
P = 3l = 135 × 3 = 405 cm
b ). P = 44 cm =>
=> l = 44 : 4 = 11 cm ( o latura )
c). L = 8 cm
l = 6 cm
P = 2 × L + 2 × l = 2 × 8 + 2 × 6 = 16 + 12 = 28 cm
Răspuns:
135*3=405cm
44/4=11cm
2*(8+6)=2*14=28cm
Explicație pas cu pas: