the diagram abcdef represents a metal drinking trough made from a closed cyclindrical drum that was bisected length-wise .
the trough has a diameter of 56 cm and a capacity of 110 litres.
(i) calculate
a.) the area of the cross-section ade, [2]
b.) ab.

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?