Answer
$76\times236$
Work Step by Step
$l=3w+8$
$P=624$
Also, $P=2w+2l$
Solve for w by substitution.
$P=2w+2(3w+8)$
$P=2w+6w+16$
$P=8w+16$
Use the information that $P=624$.
$624=8w+16$
$608=8w$
$76=w$
Plugin your value for $w$ into the information about $l$.
$l=3(76)+8=228+8=236$
$76\times236$
