A tank is 25 m long, 12 m wide and 6 m deep. The cost of plastering its walls and bottom at 75 paisa per m2 is -

A tank is 25 m long, 12 m wide and 6 m deep. The cost of plastering its walls and bottom at 75 paisa per m2 is - Correct Answer TK. 558

Bottom area = 25×12 = 300m2Area of 2× walls in length direction = 2×(25×6) = 300m2Area of 2× walls in length direction  = 2×(12×6) = 144m2.'.Total area  = (300  + 300  + 144)m2.'. cost  = 744×75 = 55800 paisa  = TK.558
Bissoy MCQ

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