Why is the derivative of circle area the circumference?
5086
Why is the derivative of a circle's area its perimeter (and similarly for spheres)?
118501
Proving the length of a circle's arc is proportional to the size of the angle
64827
maximum area of a rectangle inscribed in a semi - circle with radius r.
135941
Derivative of $|x|^\alpha$
151000
Area of a weird ellipse shape.
59125
Why does this matrix give the derivative of a function?
79983
Finding the exact area of a circle?
9678
What is the equation of a general circle in 3-D space?
134871
Using definition of derivative to differentiate $f(x)= \sqrt{x}+1$
65300
Why is $\pi$ irrational?
119633
Difference Between Degrees on a circle
126799
Calculating the area of a polygon with equal sides inscribed in a circle with radius r.
140851
Precalculus unit circle with imaginary axis.
64110
What does circle symbol between two functions means?
41550
Find the Area of the ellipse
98971
Why is $\pi r^2$ the surface of a circle
65491
if the curvature is constant and positive, then it is on the circunference