Aptitude - Area - Discussion

Discussion Forum : Area - General Questions (Q.No. 10)

Area

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?

814

820

840

844

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 3 of 6.

Srivalli said: 8 years ago

1m=100 Cms, so convert 15meters *100=1500+17cms=1571,
Like wise 9meters*100=900+2cms=902cms.

(4)

S. Nipin said: 9 years ago

Suppose if the question was asked to find maximum no. of tiles then how to find the answer?

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?

Roop said: 8 years ago

Hcf is calculated because for least tiles we need area of the square be maximum.

Vinod mishra said: 1 decade ago

Hi I m not getting the hcf of 1517 and 902 is 41.

How it has calculated ?

Praveen said: 1 decade ago

I'm can't understand please explain. How to get the value 41 from the HCF?

Tina said: 8 years ago

I am not getting the solution properly. Please, could anyone explain me?

Ramesh said: 9 years ago

I didn't understand the Last step multiplication. Someone help me.

Arpan jadhao said: 8 years ago

How 1517 comes from?

I didn't understand it. Please explain me.

Anoop said: 9 years ago

@Suresh.

Thank you for explaining why HCF is used here..

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