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căutați perimetru unui triunghi cu laturile de 1)7 dm 8 cm 9 mm2) 6 dm 9 cm 7 mm 3) 5 dm 5 cm 5 mm 4)11 dm 9 cm 4 mm 5) 5 dm 6 cm 7 mm6)6 dm 8 cm 9 mm
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Răspuns :

Radoi2522ask

Răspuns:

1)

7dm=700mm

8cm=80mm

P=700mm+80mm+9mm=789mm

2)

6dm=600mm

9cm=90mm

P=600mm+90mm+7mm=697mm

3)

5dm=500mm

5cm=50mm

P=500mm+50mm+5mm=555mm

4)

11dm=1100mm

9cm=90mm

P=1100mm+90mm+4mm=1194mm

5)

5dm=500mm

6cm=60mm

P=500mm+60mm+7mm=567mm

6)

6dm=600mm

8cm=80mm

P=600mm+80mm+9mm=689mm

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