Solve the Problem

Multiple Choice

Solve the problem.
-A glass has circular cross sections that taper (linearly) from a radius of 7 cm at the top of the glass to a radius of 6 cm at the bottom. The glass is 15 cm high and full of lemonade. How much work is required to drink all the lemonade through a straw if your mouth is 8 cm above the top of the glass? Assume the density of lemonade equals the density of water. Round to two decimal places when appropriate.

A) 2.96 J
B) 0.94 J
C) 55.65 J
D) 4.32 J