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A square tile has side 30cm. How many of these tiles will cover a rectangular…

A square tile has side 30cm. How many of these tiles will cover a rectangular floor of length 7.2m and width 4.2m?

  • A.
    336
  • B.
    420
  • C.
    576
  • D.
    720
Correct Answer: Option A
Explanation

Total floor area = 720 x 420
Area of one tile = 30 x 30
No. of tile required = (frac{720 times 420}{30 times 30})
= 24 x 14
= 336 tiles