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4. Represent the volume in figure 2 as an integral and evaluate the integral. circles y - Vx Figure 2 5. Calculate the length of y = 2e3* for 1 s x = 2. 6. The conical container in Figure 3 is filled with loose grain which weighs 40 pounds/ft3. a. How much work is done lifting all of the grain over the top of the cone? b. lifting the top 4 feet of grain over the top of the cone? & ft Figure 3