the directions for clean-all say to mix 1.5 cups of cleaner with 2 quarts of water. the directions for mega-clean say to mix 3.5 cups of cleaner with 1 gallon of water. which solution has more cleaner per quart?

The coverage of a base station of a telecommunication company forms a disk with a radius of (kilometers). let be the distance of a cellphone from a base station. assume that the location of cellphones in use are randomly uniformly distributed within the disk. calculate the mean and variance for the random variable.