the internal measures of a cuboidal room are 12m×8m×4m.find the total cost of white washing of all the four walls of room if the cost of white washing is 5rs per sqaure mere.what will be the cost of white washing if the ceiling of the room is also white washed?
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Explanation:
find the CSA of cuboidal room =2(bh+lh)
then multiply the cost with CSA we find above
now,
ATQ
if ceiling is also going to be white washed then we have to find ,( CSA + lh)that is 2(lb+ bh+ lh).
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