Answer:
A≈254.47ft²
Step-by-step explanation:
A=πr2=π·92≈254.469ft²
Answer:
y= -1x+ 7
Step-by-step explanation:
x in a equation is slope and the other number is y- intercept
First we have to find length of 1 side of the square. We can use formula for area of the square. A=a*a ==>

where a is length of the side.
From this formula we can find

a=

Now we just have to multiply it by 4, because there are 4 sides.
81*4=324 - its the answer
Answer:
5/6
or
0.833...
Step-by-step explanation:
Hope this helps!
Answer:
A
Step-by-step explanation:
11/4 hours on the first day
21/4 hours on the second
21-11=10
10/4 hours or 2 2/4