Circumference 65674

The circumference of the triangle is 125 cm. The shortest side is 12 cm shorter than the longest side. The longest side is 7 cm longer than the middle side. How long is the middle side?

Correct answer:

b =  41 cm

Step-by-step explanation:

o=125 cm  o=a+b+c a=c12 c=7+b 125=a+b+c a=c12 c=7+b  a+b+c=125 ac=12 bc=7  Row2Row1Row2 a+b+c=125 b2c=137 bc=7  Row3+Row2Row3 a+b+c=125 b2c=137 3c=144  c=3144=48 b=1137+2c=1137+2 48=41=41 cm a=125bc=1254148=36  a=36 b=41 c=48

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