The diameter is 6. Explanation:
radius: 3.14r^2
28.26=3.14r^2
28.26/3.14=r^2
r^2=9
r=3
and we know that diameter is two times the radius so:
3*2=6
diameter equals 6.
if you want to check it plug back in:
3^2 * 3.14 = 28.26
hope this helped :)
False because parentheses go first.... just follow PEMDAS
Yes I think B is the correct answer
#1 - 8/7 7:8
#2 -3:4
#3 - 3:8
#4 -4:3