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a rectangular room is 3 meters longer than it is wide, and its perimeter is 30 meters. find the dimension of the room.

User Kadia
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1 Answer

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answer - 6 meters and the width is 3 meters!

why?

2 ( length + width )

18 meters = 2 ( width + 3 + width )

divide both sides by 2

9 = width + 3 + width

9 = 2 width + 3

subtract 3 on both sides.

9 - 3 = 2 width + 3 - 3

6 = 2 width

divide by 2 on both sides.

3 = width

width = 3

putting in (1)

length = width + 3 = 3 + 3 = 6

we see that

length = 6 meters
width = 3 meters

hope this helps!!!!

User Marlon
by
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