v = 1/3 a^2h
step-by-step explanation:
the volume is 1/3 a^2h.
hello,
as we don't know if g(x) is continue,
answer b
f(x)=2x²-8x+1=2(x²-4x+4)+1-8=2(x-2)²-7
vertex is (2,-7) ( a minimum since coefficient of x² is > 0)