Nancy's percentile rank on a science test was 78. this means that

The percentile rank of a certain score is the score percentages in its frequency distribution that are equal to it or lower that it.

This means that:
Nancy's percentile rank on a science test was 78. this means that Nancy equaled or surpassed 78% of all those who took the test.

The correct option is:

A rectangle that is 5.4 in x 16.2 in

Step-by-step explanation:

As the container is lying on its side, and the scanner scans from the top, it means that scanner will get a 2D of cylinder where its length and width can be seen

First, whenever a cylinder is look at from one side, it will look like a rectangle.

As the cylinder is fitted with 3 balls along its length, the length of the rectangle will be equal to the sum of diameters of all three balls, that is 5.4+5.4+5.4 = 16.2 inches

As only one ball fits along the width of the, the width of the container will be equal to diameter of one ball, that is 5.4 inches

Hence, a rectangle will formed, with the dimensions of 5.4 × 16.2 in