A cylinder has a radius of 4x + 2 and a height of 5x + 4. Which polynomial in standard form best describes the total volume of the cylinder? Use the formula V = r^2h for the volume of a cylinder.
80x^3 + 144x^2 + 84x + 16
80x^3 – 144x^2 + 84x + 16
80x^3 + 144x^2 + 84x – 16
80x^3 + 144x^2 – 84x + 16

Question

A cylinder has a radius of 4x + 2 and a height of 5x + 4. Which polynomial in standard form best describes the total volume of the cylinder? Use the formula V = r^2h for the volume of a cylinder.
80x^3 + 144x^2 + 84x + 16
80x^3 – 144x^2 + 84x + 16
80x^3 + 144x^2 + 84x – 16
80x^3 + 144x^2 – 84x + 16

harsimran_hs4 · Answer

v = r^2 h
just put in the values
   =(4x + 2)^2 * (5x + 4)
you can easily expand them to get the answer

anonymous · Answer

how?

anonymous · Answer

@connections101 Area of the base times the height.  What is the area of a circle whose radius is (4x+2)?

anonymous · Answer

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