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If you know its dimensions then use Pythagoras' theorem to find the length of its diagonals.

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9y ago
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9y ago

If the sides are x and y, then each diagonal is sqrt(x^2 + y^2).

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Q: How do you find length of each diagonal of a rectangle?
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Related questions

How do you count the number of squares crossed by the diagonal in a rectangle?

To find the length of a diagonal in a rectangle, use the Pythagorean method. Diagonal length = square root(length squared + height squared).


The length of a rectangle is 2 cm and the width is 3 cm Find the length of the diagonal?

The diagonal is 3.61cm


How do you find the diagonal of a rectangle if you know the length and the angle?

You need to use trigonometry cosine (angle) = length/diagonal diagonal = length/cos(angle)


What is the length of a diagonal rectangle with a length of 9 inches and a width of 3 inches?

To find the diagonal length of a rectangle use Pythagoras' theorem for a right angle triangle.


How do you find the unknown width of a rectangle?

It depends on what information you do have. The length and area, the length and diagonal, the length and perimeter, etc. Each set generates a different answer.


How do your find the diagonal measurement for 120 by 150?

If they are the dimensions of a rectangle then use Pythagoras' theorem to find the length of the diagonal.


What are the steps taken to get the diagonal measurement of a rectangle?

-- Multiply the rectangle's length by itself. ('square' the length) -- Multiply the rectangle's width by itself. ('square' the width) -- Add the two results. -- Find the square root of the sum. It is the length of the diagonal.


How do you find the length of rectangle diagonally by using the area given?

You can't. Suppose for instance your rectangle is 1xA, then the diagonal length is sqrt(1+A**2). But if your rectangle is sqrt(A)xsqrt(A) then your diagonal length is sqrt(2*A). The only thing one can say for sure is that the diagonal length is at least sqrt(2*A).


How do you find the width and length of a rectangle if you only know the diagnol?

If the only known fact is the length of the diagonal then the width and length of the rectangle CANNOT be determined. The diagonal could be that of a square, or of a rectangle that is very long but quite narrow. Consequently at least one more fact is required such as; the dimension of either the length or the width, or the angle that the diagonal makes to the base of the rectangle or even the area of the rectangle.


How do you find the length of a rectangle knowing ONLY the diagonal and the width?

You square the width and subtract it from the diagonal squared. Then find the square root of this number, this number is now the length.


Find the length of the diagonal of a rectangle that has a length of 16 ft and width of 10 ft?

18.9 feet


Find the length of the diagonal of a rectangle that has a length of 16 ft. and width of 10 ft.?

18.9 feet