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You do a^2 x b^2 = c^2 where a=the base, b= the height and c=the diagonal.

More info: take the square of "a" and the square of "b" and multiply them together, then take your answer and find the square root of it, that is "c" (the diagonal).

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Q: How do you calculate the diagonal in a rectangle?
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Related questions

Calculate diagonal of rectangle?

There are two of them.


How do you calculate the diameter of a rectangle?

A rectangle does not have a diameter, as such, but the diagonal is similar enough. If the sides of a rectangle are x cm and y cm then, using Pythagoras's theorem, the diagonal is sqrt(x2 + y2) cm.


The diagonal of rectangle is citizen its grade is 37 then the perimeter is?

You CAN'T calculate the perimeter of a rectangle, knowing only its diagonal. You do need some additional information about the rectangle - such as its width, or its length, or perhaps the length/width ratio.


How do you calculate dimensions of a rectangle when given diagonal?

You don't - you need additional information. Many different rectangles can have the same diagonal. If you know the diagonal and one side (which must be LESS than the diagonal), you can use Pythagoras' Theorem to calculate the other side.


How many diagonal sides does a rectangle have?

A diagonal cannot be a side of a rectangle, and a side cannot be a diagonal.


A rectangle is 4 ft by 6ft What is the length of the diagonal of the rectangle?

The diagonal is 7.21 feet.


What is the diagonal if a rectangle is 9 x 12?

A 9 x 12 rectangle has a diagonal of 15.


What is the length of a diagonal line in a rectangle 30 feet by 20 feet?

You can calculate this using the Pythagorean formula for a right triangle.


Does the diagonal of a rectangle have to be perpendicular?

yes if you want it to be a rectangle


A rectangle is 6 m wide and 11m longHow long is the diagonal of the rectangle?

The diagonal would be 12.53 meters.


If the diagonal and the area of a rectangle are 25 m and 168 m2 what is the length of the rectangle?

If the diagonal is 25m and the area is 168m2 then the longest edge of the rectangle will be 24m.


How long is the diagonal of a rectangle with dimensions 7in by 10in?

You use the pythagorous theorm to calculate the hypotenuse of the triangle, which is the same line as the diagonal. 7(7)+ 10(10)= diagonal x diagonal 149= diagonal x diagonal Diagonal= square root of 149: this approximates to 12.207in Visit quickanswerz.com for more math help/tutoring! Consider a rectangle with dimensions 7 inches by 10 inches. Let ABCD be the rectangle. We need to find the length of the diagonal. We know that the diagonals of a rectangle are same in length. So, it is enough to find the length of the diagonal BD. From the rectangle ABCD, it is clear that the triangle BCD is a right angled triangle. So, we can find the length of the diagonal using the Pythagorean Theorem. BD2 = BC2 + DC2 BD2 = 102 + 72 BD2 = 100 + 49 BD2 = 149 BD = √149 BD = 12.207 So, the length of the diagonal is 12.21 inches. Source: www.icoachmath.com