To get 4 or fewer correct, at least 2 answers have to be wrong. And the probability of that is: 3/4 x 3/4=9/16 1-9/16=probability that 4 or fewer are correct=7/16 ☺☺☺☺
Vcylinder=hpir^2
Vsphere=(4/3)pir^3
Vcone=(1/3)hpir^2
Vcylinder=15*pi*5^2=375pi in^3
Vsphere=(4/3)*pi*6^3=288pi in^3
Vcone=(1/3)*15*pi*8^2=320pi in^3
greatest is Vcylinder at 375pi in^3
answer is A (cylinder)
