Question 962917
L=length; W=width=9cm; P=perimeter=50cm; A=area=144cm^2
{{{A=L*W}}}
{{{144cm^2=L*(9cm)}}} Divide each side by 9cm.
{{{16cm=L}}} ANSWER: The length is 16 centimeters.
CHECK:
P=2(L+W)
50cm=2(16cm+9cm)
50cm=2(25cm)
50cm=50cm