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Find the length of the diagonal.
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Find The Length Of The Diagonal 50 Points For You Plus A Thanks 5 Star And Brainliest Suggested A Fast Answer class=

Answer :

HERMANC156GO

Answer:

10

Step-by-step explanation:

Should be right

ThIs iS aN AMazInG AnswEr

KMYAMCCASTERGO

Answer:

Step-by-step explanation:

Let side be x

Using Pythagoras theorem

diagonal =hypotenuse

x²+x²=20²

2x²=400

x²=200

x=10√2

Side is 10√2

Perimeter=4×10√2=>40√2cm

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