Pythagoras
28^2-19^2= 423
Square root of 423 = 20.5669638
Answer = 20.5669638
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Step-by-step explanation:
Answer:

Step-by-step explanation:
Let's solve for C.

Step 1: Flip the equation.

Step 2: Add
to both sides.


Step 3: Divide both sides by
.


Answer:
