A rectangular room is three times as long as it is wide, and its perimeter is 72 meters. Find the length of the room.

L=3w

P=2L+2w

P=6w+2w

P=8w

72=8w

x=9

L=27

meters

Step-by-step explanation:

Let = the width of the rectangular room.

From the information "is three times as long as it is wide", we can set the length of the room as .

Perimeter of rectangle = (formula for perimeter of rectangle)

(combine like terms)

meters

∴ The width of the room is 9 meters.

To find the length of the room, we can use substitution:

Length =

meters

∴ The length of the rectangular room is 27 meters.

Hope this helps :)

is only a line? i think so

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step-by-step explanation:

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