Use circle A to find the length of arc CH. The radius of circle A is 90 cm

Pls i’m dumb as heck i’ll give y’all so many points if that encourages you

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.

How to find the volume of an area and height