IM GIVING BRAINLIEST Calculate the missing angle measure of each triangle on the left butterfly wing. Write the angle measure inside the angle. The right butterfly wing is a reflection of the left butterfly wing and corresponding angles are congruent.

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.