Correct Answer: Option C
Area to be plastered = [2(l + b) x h] + (l x b)
= {[2(25 + 12) x 6] + (25 x 12)} m2
= (444 + 300) m2
= 744 m2.
Cost of plastering =Tk. (744 x75/100)= Tk. 558.
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