# Square diagonal

Calculate the length of the square diagonal if the perimeter is 476 cm.

Result

d =  168.29 cm

#### Solution:

$o=476 \ \text{cm} \ \\ \ \\ o=4a \ \\ \ \\ a=o/4=476/4=119 \ \text{cm} \ \\ \ \\ d^2=a^2 + a^2=119^2 + 119^2=28322 \ \\ \ \\ d=\sqrt{ 2 } \cdot \ a=\sqrt{ 2 } \cdot \ 119 \doteq 119 \ \sqrt{ 2 } \doteq 168.2914 \doteq 168.29 \ \text{cm}$ Our examples were largely sent or created by pupils and students themselves. Therefore, we would be pleased if you could send us any errors you found, spelling mistakes, or rephasing the example. Thank you!

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