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the length of a rectangular classroom is 3 times its width. if the area covered by the classroom is 432 square feet, find the length and width of the classroom

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Answer:

w=12 feet

L =3×12=36 feet

Step-by-step explanation:

w×L=432 ⇔ w(3w) = 432 ⇔ 3w² = 432 ⇔ w² = 432÷3 = 144

Then  w = √(144) = 12.

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