Answer:
You are correct, it is 20% increase as:
(60/50) - 1 = 0.2 = 20%
Answer:
21 feet
Step-by-step explanation:
The square root of 441 is 21 and since the room is a square, all sides are even.
I’m pretty sure this is how to do it.
Answer:
The formula for this is 
The value of x would be 7.14 but since it says round to the nearest tenth it would be 7.1 or 7.10