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- A tank is 25 m long, 12 m wide and 6 m deep.
Question 1:
A tank is 25 m long, 12 m wide and 6 m deep. The cost of plastering its walls and bottom at 25paise per sq. m, is A. 212
B. 195
C. 186
Feedback Area to be plastered = [2(l + b) x h] + (l x b)
Area= {[2(25 + 12) x 6] + (25 x 12)} = 744 m²
Cost of plastering = 744 * 25/100 = 186
Area= {[2(25 + 12) x 6] + (25 x 12)} = 744 m²
Cost of plastering = 744 * 25/100 = 186
D. 174
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