Aptitude - Area - Discussion
Discussion Forum : Area - General Questions (Q.No. 10)
10.
What is the least number of squares tiles required to pave the floor of a room 15 m 17 cm long and 9 m 2 cm broad?
Answer: Option
Explanation:
Length of largest tile = H.C.F. of 1517 cm and 902 cm = 41 cm.
Area of each tile = (41 x 41) cm2.
 Required number of tiles = |
 |
1517 x 902 |  |
= 814. |
| 41 x 41 |
Discussion:
56 comments Page 4 of 6.
Isha said:
10 years ago
Hey where did we get 1517 and 902 from?
Suresh said:
10 years ago
Friends HCF have taken because we need square tiles, so we need to divide length and breadth of floor in equal parts, that's why we are taking HCF.
Sheetal said:
1 decade ago
I couldn't understand why HCF is taken?
Abc said:
1 decade ago
I am unable to find the LCM I tried it a lot can you give me a guess how did it come?
SUKUMAR SATYEN said:
1 decade ago
For same type of Questions, we can also use different formula:
Number of Squares inside Rectangle:
= Square of (LCM of Length and Width of Rectangle)/(Area of Rectangle).
= (33374*33374)/(1517*902) = 814.
Number of Squares inside Rectangle:
= Square of (LCM of Length and Width of Rectangle)/(Area of Rectangle).
= (33374*33374)/(1517*902) = 814.
Praveen said:
1 decade ago
I'm can't understand please explain. How to get the value 41 from the HCF?
Anbarasu said:
1 decade ago
What is the reason about using hcf?
Faraz said:
1 decade ago
Here they are telling least number of square tiles not least area of square tile, so we need big tile thats why hcf otherwise we take lcm. I hope you understand least number of tile.
Apurv said:
1 decade ago
Least no of square tiles. Mean largest tiles.
Valli said:
1 decade ago
What's the reason about using hcf?
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