Answer:
good to know!
Step-by-step explanation:
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The internet and the government education system. Case closed
Answer:
No
Step-by-step explanation:
Use Pythagorean's Theorem a² + b² = c² to find the hypotenuse. That will tell you her door's length from one corner the opposite.
42² + 84² = c²
Now solve for c
1764 + 7056 = c²
Now add the left side together and take the square root of both sides.
c = 93.914 in
That is not enough room for a 96 in diameter table to fit through.
I'm sure you know the formula for Pythagoras Theorem.
The formula is 
C = Your hypotenuse
A + B = The other two adjacent sides.
So you plug in the numbers

And you'll get the answer, which is 56.