Choose all of the expressions that are less than 10 2/3

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min

Which image (a’ b’ c’ d’) of abcd cannot he produced using only reflections ?

Given the net of the rectangular prism, what is its surface area?