Can someone give me the answer for this

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 p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if

What is 100,000 times 1/100,000, using the standard method of multiplication? write the answer as 10 to a power.