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### Discussion :: Area

1.  A tank is 25 m long, 12 m wide and 6 m deep. The cost of plastering its walls and bottom at 75 paise per sq. m, is:
2.  A. Rs. 456 B. Rs. 458 C. Rs. 558 D. Rs. 568

Cost of plastering = Rs.[744 x $$\frac { 75 } { 100 }$$] =Rs. 558.