Answer:
[tex]75.36x^3+339.12x^2+508.68x+254.34[/tex]
Step-by-step explanation:
The volume of the cylinder with radius (2x+3) and height 3(2x+3) = 6x+9 is
[tex]V=\pi ((2x+3)^2)(6x+9)\\ V=\pi (4x^2+12x+9)(6x+9)\\ V=(24x^3+72x^2+54x+36x^2+108x+81)\pi \\ V=3.14(24x^3+108x^2+162x+81) \\ V=75.36x^3+339.12x^2+508.68x+254.34[/tex]
