answersLogoWhite

0


Best Answer

Because the perimeter is lenght + length +width +width, you do perimeter - double the width, and then halve the remaining number. that should give you the length.

User Avatar

Wiki User

13y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How can you calculate the length of a rectangle if the perimeter and the width are given?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Continue Learning about Math & Arithmetic

If 15.6 and CE 4.5 what is the perimeter of the rectangle?

If the given dimensions are the length and width of a rectangle then its perimeter is 15.6+4.5+15.6+4.5 = 40.2


How do you find the length of a rectangle if the perimeter is 40 and the width is 2inches?

perimeter = 2 x (length + width) ⇒ length + width = perimeter ÷ 2 ⇒ length = (perimeter ÷ 2) - width So to find the length of the given rectangle, subtract the width from half the perimeter is how to do it. IF you meant "What is the length..." then: length = perimeter ÷ 2 - width = 40 ÷ 2 - 2 in = 20 - 2 in = 18 in


How do you find the length and width of rectangle when given the perimeter but not the width or length?

by appying 2l+2w


How do you find the optimal area of a rectangle given its perimeter?

Multiply length by width


How do you know that the perimeter of a rectangle is directly proportional to its length?

The perimeter of a rectangle is given by the formula P = 2(l + w). It is clear that as the length, l, increases, the perimeter, P, increases, as well. We say, therefore, that P is directly proportional to l. If l is the length and b is width of a rectangle then, the perimeter P of the rectangle is 2(l + b) units. P = 2(l + b) P = 2l + 2b If have b as a constant then, 2b will be a constant. Now l is the varying quantity. Say 2b = K P = 2l +K Perimeter changes if the length of the rectangle changes. In particular, if the length increases the perimeter of the rectangle increases. Similarly, if the length decreases the perimeter also decreases. So, the perimeter is directly proportional to the length of the rectangle. Source: www.icoachmath.com In the most simplest explanation, the sum of both lengths, and both widths of the rectangle, IS the perimeter. So obviously the perimeter is directly proportionate to its length (and its width).

Related questions

Formula of a rectangle?

There is no formula for a rectangle. There are formula for calculating its area, perimeter or length of diagonals from its sides, or it is possible to calculate the length of one pair of sides given the other sides and the area or perimeter, or the two lots of sides given area and perimeter and so on.


What is the perimeter of a rectangle whose length is 18 cm and breadth is 10 cm?

56 cm Perimeter of a rectangle is given by 2(length + breadth). So, perimeter of given rectangle = 2(18 + 10) = 56


How do you find the perimeter of a rectangle given the length and width?

Perimeter = 2*(L + W).


What is the formula to find the length of a rectangle when the perimeter and width is already given?

Length = (Perimeter - twice width) / 2


If 15.6 and CE 4.5 what is the perimeter of the rectangle?

If the given dimensions are the length and width of a rectangle then its perimeter is 15.6+4.5+15.6+4.5 = 40.2


How do you find the length of a rectangle if the perimeter is 40 and the width is 2inches?

perimeter = 2 x (length + width) ⇒ length + width = perimeter ÷ 2 ⇒ length = (perimeter ÷ 2) - width So to find the length of the given rectangle, subtract the width from half the perimeter is how to do it. IF you meant "What is the length..." then: length = perimeter ÷ 2 - width = 40 ÷ 2 - 2 in = 20 - 2 in = 18 in


How do you find the length and width of rectangle when given the perimeter but not the width or length?

by appying 2l+2w


what- based on the given information, which conjecture is invalidGiven: A rectangle has a perimeter of 24 inches.?

The rectangle has a length of 12.


How do you find the optimal area of a rectangle given its perimeter?

Multiply length by width


How do you find area when given perimeter and width?

If you are given the width and the perimeter, then figure out what the length is then calculate the area... hope this helps :)


Find the perimemter of a rectangle with length 15 meters and width 10 meters?

The perimeter of a rectangle is given by:P = 2l + 2w, where P is the perimeter of the rectangle, l is the length of the rectangle, and w is the width of the rectangle.P = 2(15) + 2(10) = 50 meters.


How do you know that the perimeter of a rectangle is directly proportional to its length?

The perimeter of a rectangle is given by the formula P = 2(l + w). It is clear that as the length, l, increases, the perimeter, P, increases, as well. We say, therefore, that P is directly proportional to l. If l is the length and b is width of a rectangle then, the perimeter P of the rectangle is 2(l + b) units. P = 2(l + b) P = 2l + 2b If have b as a constant then, 2b will be a constant. Now l is the varying quantity. Say 2b = K P = 2l +K Perimeter changes if the length of the rectangle changes. In particular, if the length increases the perimeter of the rectangle increases. Similarly, if the length decreases the perimeter also decreases. So, the perimeter is directly proportional to the length of the rectangle. Source: www.icoachmath.com In the most simplest explanation, the sum of both lengths, and both widths of the rectangle, IS the perimeter. So obviously the perimeter is directly proportionate to its length (and its width).