Circumference 31361

The lengths of the triangle sides are in the ratio of 3:5:7. Its circumference is 45 cm. Find its lengths.

Correct answer:

a =  9 cm
b =  15 cm
c =  21 dm

Step-by-step explanation:

o=45 cm d=o/(3+5+7)=45/(3+5+7)=3 cm  a=3 d=3 3=9 cm
b=5 d=5 3=15 cm
c=7 d=7 3=21=21 dm   Verifying Solution:  o2=a+b+c=9+15+21=45

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