HEP WILLGIVE 50 POINTS!A square is inscribed in a circle. If the area of the square is 9 in^2, what is the ratio of the circumference of the circle to the are of the circle?

Step-by-step explanation:

Area of the square is 9 in², so side of the square is:

The diagonal of the square is the diameter of the circle.

Circumference of circle:

Area of circle:

Ratio of circumference to area:

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