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Need help with explanation will give brain list

Need help with explanation will give brain list-example-1

1 Answer

2 votes

Answer:

Option 4: 12.7

Explanation:

You can look at the diagram as two 45º45º90º triangles.

By the properties of a 45º45º90º triangle:

OW=WL=a

OL=a√2

a√2 = 18

a=18/√2a≈12.728

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