Answer:
L = 22m
W = 10m
Step-by-step explanation:
220 = (w+12)(w)
220 = w^2 + 12w
w^2 + 12w - 220 = 0
(w+22)(w-10) = 0
w+22 = 0; w = -22 (disregard since negative)
w-10 = 0; w = 10m ✓
l = w + 12 = 10 + 12 = 22m
To check:
A = l × w
220 = 22 × 10
220 = 220 ✓
Therefore, L = 22m and W = 10m.
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Answers & Comments
Answer:
L = 22m
W = 10m
Step-by-step explanation:
220 = (w+12)(w)
220 = w^2 + 12w
w^2 + 12w - 220 = 0
(w+22)(w-10) = 0
w+22 = 0; w = -22 (disregard since negative)
w-10 = 0; w = 10m ✓
l = w + 12 = 10 + 12 = 22m
To check:
A = l × w
220 = 22 × 10
220 = 220 ✓
Therefore, L = 22m and W = 10m.