The diagonal of a square is 10 cm how do i find out the length and the width

Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable

Find the value of x. round the length to the nearest tenth