1 answer:
Answer:
A. 
Step-by-step explanation:
The question seems to be incomplete. However, we'll make the following assumption.



Pythagoras theorem states that:

Substitute values for Hypothenuse, Opposite and Adjacent.
This gives

or

From the list of given options.
A answers the question
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Answer:
7
Step-by-step explanation:
By subtracting c on both sides
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I think it’s 2/7=8/28 1/4=7/28