A random two digit number between 10-99 is drawn. What's the probability of it being 32?

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank

Simplify the following expression 48^1/2

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?