Quantitative Aptitude :: Area Problems And Answers

10. A room 11 m 47 cm long and 7m 77 cm broad is to be paved with square tiles. Find the least number of square tiles required to cover the floor.

A. 636 B. 640
C. 647 D. 651
Answer & Explanation

Answer: Option D

Explanation:
Area of the room = (1147 x 777) cm2.
Size of largest square tile = H.C.F. of 1147 cm and 777 cm = 37 cm.
Area of 1 tile = (37 x 37) cm2.
Number of tiles required =(1147×777)/(37×37)=651


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