0
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.
Still curious? Ask our experts.
Chat with our AI personalities
FranI've made my fair share of mistakes, and if I can help you avoid a few, I'd sure like to try.
Chat with Fran
SteveKnowledge is a journey, you know? We'll get there.
Chat with Steve
LaoThe path is yours to walk; I am only here to hold up a mirror.
Chat with LaoAdd your answer:
Earn +20 ptsQ: How do you calculate the diagonal of a rectangle?
Write your answer...
Submit
Still have questions?
Continue Learning about Math & Arithmetic
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.
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
What is the diagonal of a rectangle with width 10cm and length 24cm?
The diagonal is 26cm
If a rectangle is 9cm by 11cm how long is the diagonal?
The diagonal is 14.21 cm
Trending Questions
How many seconds in 240 days?
How many km is a league?
Are four maxwell's equations Independent?
What are all prime number?
Is 3.6 prime or composite?
What is the formula in getting the total area of a cylinder?
What percentage of United States foreign aid is borrowed from china each year?
Definition of elementary set concepts in maths?
The branch of mathematic that uses letters called variables in place of numerals?
Social inequality was both accepted and resisted in classical civilizations. What evidence might support this statement?
How may words can you make from the word Happy Birthday?
Can you find the prime factorization of 69?
What is eight twelfth plus one sixth?
What percent is 20 is 3?
What is the consecutive number to 62?
What is 3 2x - 3 x plus 1?
What is vernier micrometer least count in inch?
How fast wil a plane fall from 38000 feet?
What is the formula of wave velocity?
What is the roman numeral for march 20 1999?
Copyright ©2025 Infospace Holdings LLC, A System1 Company. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Answers.