Answer:
W=18cm L=24cm
Step-by-step explanation:
A=wl
432=w(6+w)
432=6w+w^2
w^2+6w-432=0
(w+24)(w-18)=0
w+24=0
w=-24
w-18=0
w=18
W=18
L= 6+w
L= 6+18
L=24
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Answers & Comments
Answer:
W=18cm L=24cm
Step-by-step explanation:
A=wl
432=w(6+w)
432=6w+w^2
w^2+6w-432=0
(w+24)(w-18)=0
w+24=0
w=-24
w-18=0
w=18
W=18
L= 6+w
L= 6+18
L=24