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If they are width and length of a rectangle or triangle, where the angle between them is 90°, then it's time to call on our mate Pythagoras.
He said that the square of the diagonal = the sum of the squares of the other two sides.
1. Square the width
2. Square the length
3. Add these squares together
4. Find the square root
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How do you find the area of a rectangle given the length and diagonal?
The area of a rectangle is length times width. If you have the length and a diagonal, you will first have to figure out the width, using the formula of Pythagoras. length2 + width2 = diagonal2; solving for width: width = square root of (diagonal2 - length2). Once you have the width, just multiply lenght x width.
If you know that the diagonal of the rectangle is 13 feet and the length is 7 feet longer than the width what is the width?
The diagonal can be found by taking length^2+width^2=diagonal^2 13^2=x^2+(x+7)^2 169 = x2 + x2 + 14x + 49 120 = 2x2 + 14x x2 + 7x - 60 = 0 now just factor, and you have the answer. It's the positive x value.
Are there another formulae in solving th diagonals of the rectangles?
Other than what? It really all depends on what is given. For example:If you know the length of one diagonal, the other is just as long.If you know the length and width of the rectangle, use Pythagoras' formula for the diagonal.If you know one of the sides of the rectangle, and an angle, use some basic trigonometry to find the diagonal.
How do you find length x width?
You just multiply two different sides
How do you find width in rectangular prism if area volume and length is given?
I Just want an answerr?
