answersLogoWhite

0


Best Answer

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.

User Avatar

Wiki User

13y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How do you calculate the diagonal of a rectangle?
Write your answer...
Submit
Still have questions?
magnify glass
imp
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 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.


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.


Can you draw a x in a rectangle?

Yes, the diagonal of a rectangle is X.