What is the equation of the circle whose diameter expands from point a = (-3,-2) to b= (1,4).

Volume of a cylinder with a radius of 13 in and height of 30 in

Atoy company is considering a cube or sphere-shaped container for packaging a new product. the height of the cube would equal the diameter of the sphere . compare the volume to surface area ratios of the containers. which packaging will be more efficient? for a sphere, sa =4πr²

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).