A cylindrical vase has a diameter of 6 inches. At the bottom of the vase there are eight marbles, each of diameter 3 inches. The base is filled with water up to a height of 10 inches. Which of the following could be used to calculate volume of water in the vase?

How do i get the answer for 2/3 * 10/3

Find the area of a trapezoid with a height of 23, base 1 of 10 and base 2 of 18

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.