A 5 foot board rests under a doorknob and the base of the board is 3.5 feet away from the bottom of the door. Approximately how high above the ground is the doorknob?

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asked Jun 8, 2020 88.1k views

1 vote

A 5 foot board rests under a doorknob and the base of the board is 3.5 feet away from the

bottom of the door. Approximately how high above the ground is the doorknob?

Mathematics
middle-school

Tobias Feil asked

by Tobias Feil

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1 Answer

3 votes

Answer: 3.57

Explanation:

Ptamzz answered Jun 14, 2020

by Ptamzz

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