2 years ago

What us the length of the longer side?

1 answer:

3 0

The perimeter:
$P=2\cdot(3x+3)+2\cdot2x=6x+6+4x=10x+6\\\\P=146\ units\to10x+6=146\ \ \ |-6\\\\10x=140\ \ \ |:10\\\\x=14\ units$
The length of the longer side:
$3x+3=3\cdot14+3=42+3=45\ units$

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