The length of a rectangle is 3 times the width. the perimeter of the rectangle is 56 feet. find the length of the rectangle.

9 answers
Question:

The length of a rectangle is 3 times the width. the perimeter of the rectangle is 56 feet. find the length of the rectangle.

Answers

length = 21

Step-by-step explanation:

P = 2L + 2W,   L = 3W

P = 2(3W) + 2W = 56

8W = 56

W = 7

L = 3W = 3(7) = 21

length = 21

Step-by-step explanation:

P = 2L + 2W,   L = 3W

P = 2(3W) + 2W = 56

8W = 56

W = 7

L = 3W = 3(7) = 21

7

Step-by-step explanation:

56/2=28 (since the formula is w x l x 2)

28/4=7

Width is 7 inches and length is 21 inches.

7 + 21 = 28 x 2 = 56

i think the answer is 96.

Length = 21 and Width = 7

Step-by-step explanation:

Length (L)= 3x width (W)

L = 3W

Perimeter (P) = 56

Perimeter = 2L + 2W

56 = 2(3W) + 2W

56 = 6W + 2W

56 = 8W

W = 56/8

W = 7

L = 3W

L = 3(7)

L = 21

therefore Length = 21 and Width = 7

Length: 27 width:9

Step-by-step explanation:

27 + 27 + 9 + 9 = 72 and 27 is 3 x 9

Step-by-step explanation:


[tex]The length of a rectangle is 3 times its width. the perimeter of the rectangle is at mostb112 cm. wh[/tex]

The formula for calculating the perimeter of a rectangle is to add all the sides up.

i.e. P = x + x + y + y

where P = perimeter

x = width

y = length

so to find the dimensions for this rectangle, let the width of the rectangle be x and the length be 3x (since its 3 times the width of the rectangle).

Perimeter = x + x + 3x + 3x

putting the value of perimeter and adding up the sides:

72 = 8x

72/8 = x

x = 9

Now, we have found the width (x) to be 9 so we can find the length too.

length was supposed as 3x

3(x) = 3(9) = 27

so width = 9

and length = 27

Width=7

Length=21

Step-by-step explanation:

Width=x

length=3x

x+x+3x+3x=56

8x=56

x=7

width = x = 7

length = 3x = 21

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