Question

Calculati perimetru unui triunghi cu laturile de
7dm 8cm 9 mm
6dm 9cm 7mm
5dm 5cm 5mm
11dm 9cm 4mm
5dm 6cm 7mm
6dm 8cm 9mm

Answer 1

a) 7dm=700mm
8cm=80mm
P=700mm+80mm+9mm=789mm = 78,9 cm = 7,89 dm
b)6dm=600mm , 9cm=90mm
P=600mm+90mm+7mm=697mm=69,7cm=6,97dm
c)5dm=500mm , 5cm=50mm
P=500mm+50mm+5mm=555mm=55,5cm=5,55dm
d)11dm=1100mm , 9cm=90mm
P=1100mm+90mm+4mm=1194mm=119,4cm=11,94dm=1,194m
e)5dm=500mm , 6cm=60mm
P=500mm+60mm+7mm=567mm=56,7cm=5,67dm
f)6dm=600mm , 8cm=80mm
P=600mm+80mm+9mm=680mm=68cm=6,8dm