Answer:
20 units squared
Step-by-step explanation:
Use pythagorean theorem to find third side of triangle


Take the sqr root of 20

So the side of the square is sqr root of 20
Area is length x width
The area of a square is 2 times s, where s is the length of one side since a square sides are all equal.
So

Answer:
True
Step-by-step explanation:
Deviation is how much data in the set differs from the mean or average of the set. This is true.
228/12 = 19. To check, turn it into multiplication, by doing 19 * 12, which equals 228.
Hope this helps! ☺♥
Answer:
2
Step-by-step explanation:
2(1)(3)+2/2(1)(3)-2