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OpenStudy (anonymous):
express the cost c of insulating a cylindrical water tank of height 2m as a function of its radius r, if the cost of insulation is $3 per square meter
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OpenStudy (anonymous):
Find the areas: top and bottom: 2( pi r^2), side: 2 pi r h then multiply total area in m^2 by $3/m^2.
OpenStudy (anonymous):
Glad to have helped.
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