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If you take the square of the long side and add it to the square of the short side, you get the diagonal (hypotenuse) squared. Then just find square root of that. For example, if short side is 3cm and long side is 4cm:

9 + 16 = 25, so the diagonal would be the square root of 25 ie. 5.

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โˆ™ 2010-08-11 15:58:19
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Q: How do you calculate the diagonal of 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.


How many diagonal sides does a rectangle have?

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


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.


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.


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.


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.


Can you draw a x in a rectangle?

Yes, the diagonal of a rectangle is X.


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.


If a rectangle is 9cm by 11cm how long is the diagonal?

The diagonal is 14.21 cm


What is the diagonal of a rectangle with width 10cm and length 24cm?

The diagonal is 26cm


How long is the diagonal of 7' x 14' rectangle?

The diagonal is 15.652'


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.


Find the area of the largest rectangle incribed in a circle?

The largest rectangle inscribed in a circle would be the inscribed square. You can calculate the area of the square by the fact that its diagonal is the diameter of the circle.


If the length of a rectangle is 16 and the width is 12 what is the diagonal measurement?

The diagonal is 20.


How long is the diagonal dimension of a rectangle with dimensions 60' by 80'?

The diagonal is 100'


How long is the diagonal dimension of a rectangle with dimensions of 26' 40 '?

The diagonal is 47.707'


How long is the diagonal of a rectangle with demensions 42ft by 25?

The diagonal is 48.877 feet.


What is the diagonal of a rectangle 28 x 64 feet?

The diagonal is 69.856 feet.


How is the diagonal in parallelogram formed?

a squished rectangle


Is a diagonal line through a rectangle equal to the vertical and horizontal sides?

No. The diagonal through a rectangle can be computed via the Pythagorean theorem: c2 = a2 + b2 where c is the diagonal length and a and b are the horizontal and vertical lengths of the rectangle.


The diagonal of a rectangle is 50cm if the length of a rectangle is 40cm what is the width?

The width will be 30cm


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).