Please find cost, which is 75 paisa per Sq. meter, of plastering all the walls and the bottom of a tank with 25 meter length, 112 meter width and 6 meter height.
Option:
A. INR 189
B. INR 558
C. INR 783
D. INR 1350
Answer: B . INR 558
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Justification:
Area of 4 walls of the tanks = ((L + B) * H) * 2 = ((25+12) * 6) * 2 = (37 * 6) * 2 = 444 Sq. Meter
Area of bottm = L * B = 25 * 12 = 300 Sq. Meter
Total area = 444 + 300 = 744 Sq. Meter
The cost = total area * cost per Sq. meter = 744 * 0. 75 = 558 INR.
