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
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
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
Source: Myschool Past Questions Archive (Record #31602)