Please help maths question which box is it and why!

Karl needs to build a stage that has an area of 72 square feet. the length of the stage should be longer than the width. what are the possible whole number measurements for the length and with of the stage complete the table with possible measurements of the stage

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis. y = 7ex, y = 7e^-x, x = 1; about the y-axis

Rewrite 9 log, x2 in a form that does not use exponents. 9log, x = log, x