Which of the following two-dimensional shapes can be rotated to create a cylinder?

triangle
square
circle
ellipse

A rectangle works as well, and it is the more general answer. If you were to rotate either figure along an axis parallel to one of the sides, then you will effectively create a revolving door motion. This sweeps out the 3D shape of a cylinder.

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204

i believe it is 0.1m because the measurement of 30.4m limits how precise you can be

you can only be as precise as the least precise measurement