Acylindrical piece of wood has a height of 12 inches and a base radius of 4 inches. a woodworker cuts the piece in half vertically through the center of its bases, as shown. describe the shape of the cross section, and find its area. justify your reasoning.

answdf

step-by-step explanation: bcuz d is right

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