11. 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 = pir2h for the volume of a cylinder. (1 point) 80pix3 + 144pix2 + 84pix + 16pi
20pix2 + 26pix + 8pi
80pix3 + 144pix2 + 84pix – 16pi
400pix4 + 1040pix3 + 996pix2 + 416pix + 64pi
Multiplying by the last binomial, we have: π(16x²*5x+16x*5x+4*5x+16x²*4+16x*4+4*4) = π(80x³+80x²+20x+64x²+64x+16) = π(80x³+144x²+84x+16) = 80πx³+144πx²+84πx+16π