A circular race track has a diameter of 1/2 mile. How far does a car travel in one lap around the track? (1/2 = .5)
round if needed.
I need the area, not the circumference :D

If the circular race track is a circle, they are asking you to find the area of a circle.

Step-by-step explanation:

Area (A) = π This sign π is known as pi or also known as 3.142. What you need to do is pi x radius squared. Hope this helped.

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