Arectangle is called cool if the number of square units in its area is equal to twice the number of units in its perimeter. a cool rectangle also must have integer side lengths. what is the sum of all the different possible areas of cool rectangles?

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

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

How do you find principle and simple interest