This is a square, and so all the sides will be the same measurements. Note that you are given an area, so you'll have to root the total area to get a side.
√400 = 20
One side's measurements is 20 in
hope this helps
Answer: third one
Step-by-step explanation:
Answer is C because they are next to each other in 180 degree angles or 90 degrees angles
Answer:B
Step-by-step explanation: