2013
Mathematics
67ca00ce0c643c71d77dee1f
A square tile has side 30 cm. How many of these tiles will cover a rectangular floor of length 7.2m and width 4.2m?
A.
720
B.
336
C.
420
D.
576
Correct Answer: 336
Explanation
Length of the tile = 30 cm = 0.3m Area of the tile = 0.3 × 0,3 = 0.09 m2 Area of the room = (7.2 × 4.2)m2 Number of tiles = 7.2×4.2/0.09 = 336
Length of the tile = 30 cm = 0.3m Area of the tile = 0.3 × 0,3 = 0.09 m2 Area of the room = (7.2 × 4.2)m2 Number of tiles = 7.2×4.2/0.09 = 336THIS WEEK's
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