A cylindrical tank has a diameter of 12 in. with 20 in. of water. A piece of iron is submerged in the water and the water level is raised 6 in. What
is the volume of the piece of iron?

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

Consider circle c with angle acb measuring 3/4 radians.if minor arc ab measures 9 inches, what is the length of the radius of circle c? if necessary, round your answer to the nearest inch.

Which strategy is used by public health to reduce the incidence of food poisoning?