# Square diagonal

Calculate the length of diagonal of the square with side a = 23 cm.

Correct result:

d =  32.53 cm

#### Solution:

$a=23 \ \text{cm} \ \\ \ \\ d^2=a^2 + a^2=23^2 + 23^2=1058 \ \\ d=\sqrt{ 2 } \cdot \ a=\sqrt{ 2 } \cdot \ 23=23 \ \sqrt{ 2 }=32.53 \ \text{cm}$

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Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...):

Math student
Why do you need to do
d squared = a squared + a squared

Dr Math
just  simple Pythagorean therorem

Tips to related online calculators
Pythagorean theorem is the base for the right triangle calculator.

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