Basic Geometry assist » aircraft Geometry » square » Rectangles » exactly how to discover the perimeter that a rectangle


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Explanation:

The perimeter of a rectangle is found by including up the length of all 4 sides. Due to the fact that the two lengthy sides are 12 cm, and also the two much shorter sides room 7 centimeter the perimeter can be discovered by:

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The perimeter is 38 cm.

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One next of a rectangle is 7 inches and also another is 9 inches. What is the perimeter of the rectangle in inches?


Explanation:

To discover the perimeter of a rectangle, include the lengths that the rectangle\"s four sides. If you have actually only the width and the height, climate you have the right to easily uncover all 4 sides (two sides room each equal to the height and also the various other two sides are equal come the width). Multiply both the height and also width by 2 and add the results.

 

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Explanation:

For a rectangle, area is 

\"*\"
and also perimeter is
\"*\"
, where
\"*\"
is the length and also
\"*\"
is the width.

Let

\"*\"
= length and also
\"*\"
= width.

The area equation to deal with becomes

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, or
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.

To factor, find two number the sum to -4 and also multiply to -96. -12 and 8 will certainly work:

x2 + 8x - 12x - 96 = 0

x(x + 8) - 12(x + 8) = 0

(x - 12)(x + 8) = 0

Set each variable equal to zero and solve:

\"*\"
or
\"*\"
.

Therefore the length is 

\"*\"
and the width is
\"*\"
, offering a perimeter the
\"*\"
.


A rancher wants to surround his rectangular ar with barbed wire fence that prices $1.75 per foot. The ar measures 200 yards by 400 yards. Just how much will certainly the fence cost?


Explanation:

Convert the size from yards come feet by multiplying by 3: This makes the size 600 feet and also 1,200 feet. The perimeter of this farm is therefore

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.

Multiply this by the cost of the fence every foot:

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Explanation:

To discover the perimeter of any kind of rectangle, add all the the political parties up:

20 + 20 + 12 + 12 = 64 inches

 

You might use this formula together well:

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, wherein P = perimeter, together = length, w = width

This formula originates from the truth that there room 2 lengths and also 2 widths in every rectangle.

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Explanation:

Remember, the perimeter the the rectangle is the amount of all 4 sides:

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It is apparent from the number that A=6 and B=24.

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A rectangle has actually an area that 56 square feet, and a width of 4 feet. What is the perimeter, in feet, that the rectangle?


Explanation:

Divide the area the the rectangle by the broad in bespeak to uncover the length of 14 feet. The perimeter is the amount of the side lengths, i m sorry in this case is 14 feet + 4 feet +14 feet + 4 feet, or 36 feet.


The area the a rectangle is

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, and the width of this rectangle is 2 times its height. What is the perimeter the the rectangle? 


Explanation:

The area that a rectangle is the broad times the height, and we room told the in this rectangle the width is 2 times the height.

Therefore,

\"*\"
.

Plug in the value of the area:

\"*\"

Solve for 

\"*\"
to uncover a broad of 4 inches. Using our formula above, the height must it is in 8 inches. We then add all the sides of the rectangle together to uncover the perimeter:

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Robert is designing a rectangle-shaped garden. He wants the area that the garden to be 9 square meters. If the length of the lot is going come be 3 meters much less than twice the width, what will the perimeter the the lot it is in in meters?

 


Explanation:

Let l be the size of the garden and w it is in the width. 

By the specifications that the problem, l = 2w-3.

Plug this in for length in the area formula:

A = l x w = (2w - 3) x w = 9

Solve because that the width:

2w²- 3w - 9 =0 

(2w + 3)(w - 3) = 0

w is either 3 or -3/2, yet we can\"t have actually a an adverse width, therefore w = 3.

If w = 3, then length = 2(3) - 3 = 3.

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Now plug the width and length into the formula for perimeter:

P = 2 l + 2w = 2(3) + 2(3) = 12

 

 


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