readergirl12
  • readergirl12
A water tank composed of a cylinder and 2 half spheres is shown below. The tank is being filled with drinking water by using a bucket that can hold 0.34 cubic feet of water. Emma is able to pour 5 full buckets into the tank every 3 minutes. How long will it take to fill the water tank completely at this constant rate? Use 3.14 for pi and round to the nearest whole minute. The volume of the tank is ?? cubic feet and it will be completely filled with water at the end of ?? minutes. The cylinder is below. <3
Mathematics
  • Stacey Warren - Expert brainly.com
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schrodinger
  • schrodinger
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readergirl12
  • readergirl12
I need an explanation on how to do it..if you don't mind. :D
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MrNood
  • MrNood
so - you could imagine the tank is made up of a cylinder and 2 hemispheres 2 hemisphers is 1 sphere so you need to know: the formulae for the volume of a cylinder the formulae for the volume of a sphere write those here.. and write the values for r and h from the drawing too..
readergirl12
  • readergirl12
\[v=\pi r^2 h\] formula of a cylinder?

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MrNood
  • MrNood
yess good so - look at the centre section of th etank - it is a cylinder what is r and h for that cylinder?
readergirl12
  • readergirl12
3 and 4?
MrNood
  • MrNood
careful ! radius or diameter???
readergirl12
  • readergirl12
3 is the radius and 4 is the diameter? :o
MrNood
  • MrNood
no we want th radius the height is 4 but what is the RADIUS (not diameter)
readergirl12
  • readergirl12
I'm sort of confused..
MrNood
  • MrNood
you know th edifference between radius and diameter? look at the diagram - which dimension is 3 ft?
MrNood
  • MrNood
|dw:1450364326156:dw| what is the radius of that circle?
readergirl12
  • readergirl12
3.
MrNood
  • MrNood
3 is the diameter what is th eradius
MrNood
  • MrNood
|dw:1450364719706:dw| r is the radius - what does it measure??

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