SOLUTION: The perimeter of a rectangle is 24 cm. Find the value of x. length is 3x cm. and width is 3 cm. what is the answer please. 3 cm fffff fffff fffff 3x cm fffff

Question 112250: The perimeter of a rectangle is 24 cm. Find the value of x.
length is 3x cm. and width is 3 cm.
what is the answer please.

3 cm
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Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Remember, the perimeter of a rectangle is

Plug in the given perimeter, length and width

Plug in the given perimeter, length and width

Subtract 24 from both sides

Subtract 6x from both sides

Combine like terms on the right side

Divide both sides by -6 to isolate x

Divide

--------------------------------------------------------------
Answer:
So our answer is

Now plug in into

So the width is 9

Check:

Start with the given formula

Plug in P=24, W=9 and L=3

Multiply

Add. Since both sides are equal, our answer is verified.

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