How could we find the diameter of a circle with an area of 78.5 in.^ 2 ?? (3.14 is used for )

The zoo collects $9.60 for every 24 tickets sold. how much will be collected for 400 tickets?

What is the domain of the given function? {(3,-2), (6, 1), (-1, 4), (5,9), (-4, 0); o {x | x= -4,-1, 3, 5, 6} o {yl y = -2,0, 1,4,9} o {x|x = -4,-2, -1,0, 1, 3, 4, 5, 6, 9} o y y = 4,-2, -1, 0, 1, 3, 4, 5, 6, 9}

Which are the possible side lengths of a triangle?