SATHEE: Quantitative Aptitude Ques 1275

Quantitative Aptitude Ques 1275

Question: A room is $ 12m $ long, $ 8m $ broad and $ 10m $ high. Find the cost of painting the four walls of the room at $ Rs.,25per,m^{2}, $ it being given that the doors and window occupy $ 35m^{2}. $

Options:

A) Rs. 9315

B) Rs. 9125

C) Rs. 9240

D) Rs. 9065

Show Answer

Answer:

Correct Answer: B

Solution:

Area of the four walls of the room is the lateral surface area $ =2lb+2bh $
$ l=12m, $ $ b=8m, $ $ h=10m $ Area of the four walls $ =2\times 12\times 10+2\times 8\times 10 $ $ =400m^{2} $ Total area to be painted $ =400-35=365m^{2} $ Total cost of painting the walls $ =365\times 25=Rs\text{. 9125} $

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Quantitative Aptitude Ques 1275

Question: A room is $ 12m $ long, $ 8m $ broad and $ 10m $ high. Find the cost of painting the four walls of the room at $ Rs.,25per,m^{2}, $ it being given that the doors and window occupy $ 35m^{2}. $

Options:

Answer:

Solution:

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