Tell whether the dilation is a reduction or an enlargement. 5. triangle with C, P, P, Q, Q, R, R

6. triangle with C, X, X, Y, Y, R, R

7. triangle with C, R, R, P, P, Q, Q

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.