If x is too small that its square and higher powers be neglected then (1+3x)-2=?

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

How can i differentiate this equation?

Which equation represents h for right triangle abc