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It depends a great deal on where you live and how well your home is insulated. Square feet is not a great help when planning the size of an air conditioner. It is very useful to also have the cubic feet in the home, along with the sizes and types of windows.
Where I live in the northwest US, a 3-ton unit would do the trick easily, but then, we do not get the intensely hot, long summers as you might in say, Phoenix.
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A figure skater lifts his partner who weighs 500 N 1.0 m in 3.0 s How much power is required?
166W
How much fencing is required to enclose a circular garden whose radius is 18 meters?
Fencing needed: 2*pi*18 = just over 113 meters
How much work is done in stretching a spring from its natural length to 9 in. beyond its natural length when a force of 10 lb is required to hold a string stretched 5 in. beyond its natural length?
See http://answers.yahoo.com/question/index?qid=20080722222615AAcfBvp ; it is a similar question.
Is much an adverb?
It can be an adverb (much smarter, much more easily), but it can also be an adjective (e.g. much has been said),
How much concrete do you need for 10ft x 70ft x 4in?
To calculate volume, all the dimensions should be converted to the same unit, so that the volume will be in cubes of that unit. Since there are 12 inches in one foot, 4 inches = 1/3 foot. Multiplying the three dimensions together yields 700/3 cubic feet of concrete required, or as a decimal, 233.33....
