Is r=0.98 on a correlation graph, would it be an accurate value?

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?

The bottom of a slide at the playground is 6 feet from the base of the play set. the length of the slide is 10 feet. how tall is the slide. 11.66 feet 10 feet 6 feet 8 feet

Mens' heights are normally distributed with u 68 in and o 6 in. womens' heights have u 65 in with o 4 in. dan is 70 in tall and amy is 68 in tall. who is relatively taller? are they unusually tall?