







A one foot rise in water level 
20190915 

Stuart pose la question : If a lake were to rise one foot  how many linear feet would it spread onto the shore line ?
What is the correlation  1 foot of a rise = 10 feet onto the shore ? Does it depend on the lake
size  if so Lake Ontario in Canada. Penny Nom lui répond. 





A graph of the water level of a river 
20160105 

emoni pose la question : Suppose that the water level of a river is 34 feet and that it is receding at a rate of 0.5 foot per day. Penny Nom lui répond. 





A hemispherical bowl with a lead ball inside 
20110927 

Jean pose la question : "(a) Water is being poured into a hemispherical bowl of radius 3 inch
at the rate of 1 inch^3/s. How fast is the water level rising when the
water is 1 inch deep ?
(b) In (a), suppose that the bowl contains a lead ball 2 inch in
diameter, and find how fast the water level is rising when the ball is
half submerged." Penny Nom lui répond. 





How fast is the water level rising when the water is 1 meter deep? 
20061019 

Don pose la question : The cross section of a 5meter trough is an isosceles trapezoid with a 2meter lower base, a 3meter upper base and an altitude of 2 meters. Water is running into the trough at a rate of 1 cubic meter per minute. How fast is the water level rising when the water is 1 meter deep? Stephen La Rocque lui répond. 

