The walls and ceiling of a classroom 8 m long, 5 m wide, and 3.5 m high are to be painted. If the windows and doors which are 20 sq. m in total area are spared from painting, how many whole liters of paint need to be bought assuming 1 liter of paint can cover 4 sq. m of surface?
a. 26 L
b. 27 L
c. 28 L
d. 29 L
(if you can with explanation pls thankss)
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Answer:
C.28 L
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