A coaching institute wants to execute tiling work for one of its teaching halls 60 m long and 40 m wide with a square tile of 0.4 m side. If each tile costs Rs. 5, the total cost of tiles would be :
A. Rs. 60000
B. Rs. 65000
C. Rs. 70000
D. Rs. 75000
Answer: Option D
Solution(By Examveda Team)
Number of tiles required :$$\eqalign{ & = \frac{{{\text{Area of hall}}}}{{{\text{Area of each tile}}}} \cr & = \left( {\frac{{60 \times 40}}{{0.4 \times 0.4}}} \right) \cr & = 15000 \cr} $$
∴ Total cost of tiles :
= Rs. (15000 × 5)
= Rs. 75000
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C. 30720 m2
D. 307200 m2
E. None of these
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B. 2.02%
C. 4%
D. 4.04%
E. None of these
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B. 18 cm
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D. Data inadequate
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The percentage increase in the area of a rectangle, if each of its sides is increased by 20% is:
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B. 42%
C. 44%
D. 46%
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