Parallelogram sides

In the parallelogram ABCD, the side AB is three times longer than the side BC. The perimeter of the parallelogram is 20 cm. Find the lengths of the sides of the parallelogram.

Final Answer:

a =  7.5 cm
b =  2.5 cm
c =  7.5 cm
d =  2.5 cm

Step-by-step explanation:

2(a+b)=20 a=3b  2 (a+b)=20 a=3 b  2a+2b=20 a3b=0  Row221 Row1Row2 4b=10  b=410=2.5 a=2202b=2202 2.5=7.5  a=215=7.5 b=25=2.5
c=a=7.5=7.5 cm
d=b=2.5=2.5 cm



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