What’s the volume of figure b which is the same shape but a different size than figure a (it’s not 360 or 75 I’ve tried both please help me)

If (x + 8) is a factor of f(x), which of the following must be true? both x = –8 and x = 8 are roots of f(x). neither x = –8 nor x = 8 is a root of f(x). f(–8) = 0 f(8) = 0