answersLogoWhite

0


Best Answer

A rectangle with one side that is double the length of the other side can be seen as two squares beside each other, that are half the area of the original rectangle, in this case 18 square inches / 2 = 9 square inches.

The side of a square is the square root of the area, in this case the square root of 9 square inches, which is 3 inches.

Now think about the rectangle again. What we just counted was the side of a square that made up one half of the rectangle you wanted to calculate the area of. So the shorter side of the rectangle is the same as our square, and the longer side is double the length.

So the width of the rectangle is 3 inches, and the length is 2 * 3 inches = 6 inches.

Or:

Area = length x width (A=lw)

Area = 18 (in2)

Width = w

Length = twice width (2w)

18 = (2w)w

18 = 2w2

9 = w2

3 = w

The width is 3 in., the length (2w) is 6 in.

User Avatar

Wiki User

โˆ™ 2010-06-03 00:03:19
This answer is:
User Avatar
Study guides

Algebra

20 cards

A polynomial of degree zero is a constant term

The grouping method of factoring can still be used when only some of the terms share a common factor A True B False

The sum or difference of p and q is the of the x-term in the trinomial

A number a power of a variable or a product of the two is a monomial while a polynomial is the of monomials

โžก๏ธ
See all cards
3.74
โ˜†โ˜…โ˜†โ˜…โ˜†โ˜…โ˜†โ˜…โ˜†โ˜…
834 Reviews

Add your answer:

Earn +20 pts
Q: If the area of a rectangle is 18 square inches and the length of the rectangle is twice it's width what is the length and width of the rectangle?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Continue Learning about Algebra

The length of a rectangle is 6 inches more than twice its width If the perimeter of the rectangle is 54 inches find the width of the rectangle?

Do-it-in-your-head method: Length + width is half the perimeter which is 27 inches; 27 minus 6 is 21 and one-third of 21 is 7 which is the width. (Length = 2 x 7 + 6 = 20)


We are interested in the dimensions of a certain rectangle. This rectangle has length twice the side of the square and width three units less than its sides of this square. If the two areas are equal?

The rectangle is 12 units by 3 units.


The length of a rectangle is 3 inches less than twice the width if the perimeter or the rectangle is 18 inches find the width of the rectangle?

Let L be the length of the rectangle and W the width, then L = 2W - 3. The perimeter = 2L + 2W = 2(2W - 3) + 2W = 6W - 6 But the perimeter measures 18"so, 6W - 6 = 18 : 6W = 24 : W = 4 The width of the rectangle is 4".


What is the perimeter of 14 inches wide and 24 inches long?

Assuming it is rectangle, then the perimeter equal twice the summation of length and width. Answer = 2 x (14 + 24) = 2 x 38 = 76 inches


The length of a rectangle is five feet more than twice its width and the area of the rectangle is sixty-three Find the dimensions of the rectangle?

Let the width = X. The length is twice the width plus 5. So the length must be 2X + 5. Area = 63 ft squared = X multiplied by 2X + 5 = 2X squared + 25. 2X squared = 63 - 25 = 38 2X = square root of 38. Therefore the width is the square root of 38 divided by 2 and the length is the square root of 38 plus 5.

Related questions

If the area of a rectangle is 8 square inches and the length of the rectangle is twice it's width what is the length and width of the rectangle?

2x4


The area of a rectangle is 36 square inches the length is 1 inch more than twice the width what are the dimensions of the rectangle?

9" x 4"


The length of a rectangle is 3 inches less than twice the width If the perimeter of the rectangle is 18 inches what is the width of the rectangle?

4


What is The length of a rectangle is 3 inches less than twice the width. If the perimeter of the rectangle is 18 inches find the width of the rectangle?

Length of rectangle is 5 inches and its width is 4 inches Check: 2*(5+4) = 18 inches which is its perimeter


What is the perimeter of a rectangle with length 42 inches?

A rectangle has two dimensions, length and width. You haven't said what the width is. The perimeter is the distance around the rectangle. Imagine going round it. You would go 42 inches, then a width, then another 42 inches, then another width. In general, the perimeter of a rectangle is twice its length plus twice its width.


The length of a rectangle is twice its width the perimeter of the rectangle is 42ft find the area?

98 square feet


How do you increase a square to a rectangle so that the relation of its vertical and horizontal borders is 1 against square root 3?

You draw a rectangle that has a diagonal which length is equal to twice the length of the side of the square.


If the area of a rectangle is 18 square inches and the length of the rectangle is twice it?

The question is not quite clear in what's it's asking. Presumably it's asking what is the length and width of the rectangle? Let the length be 2x and the width be x: 2x*x = 18 2x2 = 18 Divide both sides by 2: x2 = 9 Square root both sides: x = 3 Therefore: length = 6 inches and width = 3 inches If it is asking what the width is, and the length is twice the area, then the width would be .5 inches. (L= A*2, L=36) (36*.5=18) (L*W=A)


How much fencing will be needed to fence a property that is 78 meters long and 65 meters wide?

For a rectangle, calculate twice the length, plus twice the width.For a rectangle, calculate twice the length, plus twice the width.For a rectangle, calculate twice the length, plus twice the width.For a rectangle, calculate twice the length, plus twice the width.


The width of rectangle is 6 inches less tha twice its length Find the dimension of the rectangle if its area is 108 square inches?

W=12,l=9 ((9*2)-6=12, 12*9=108)


If the length of a rectangle is twice the width the perimeter is 42 inches what is the width?

2 (x + 2x) = 42 x + 2x = 21 3x = 21 Therefore, x = 7 The width of the rectangle is 7 inches. The length of the rectangle is 14 inches.


The length of a rectangle is twice its width If the perimeter of the rectangle is 54y find its area?

The length of a rectangle is twice its width. If the perimeter of the rectangle is , find its area.

People also asked