Triangle 71404

Which three lines of a given length can be three sides of a triangle?
A / 42mm; 22mm; 12mm;
B / 5cm, 50mm, 6cm;
C / 10m, 5m, 50dm;
D / 2.1cm, 4.2cm, 1.9cm

Correct answer:

x = B

Step-by-step explanation:

A 42>22 mm+12 mm=34 mm  B 5cm;6cm;5cm 5+5>6 6+5>5  C: 10m,5m,5m 10=5m+5m  D:4.2>2.1+1.9=4.0  x=B

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