A tank is 25m long 12m wide and 6m deep. The cost of plastering its walls and bottom at 45 paise per sq m is	Pick.
A) Rs. 234.80	B) Rs. 334.80	C) Rs. 434.80	D) Rs. 534.80	E) None of these
Explanation:   Area to be plastered = [2(l + b) Ã— h] + (l Ã— b)   = [2(25 + 12) Ã— 6] + (25 Ã— 12) = 744 sq m   Cost of plastering = 744 Ã— (45/100) = Rs.334.80 Answer: Rs. 334.80
<result>B</result>
A tank is 25m long 12m wide and 6m deep. The cost of plastering its walls and bottom at 45 paise per sq m is