Find the number of square tiles to cover the floor of a room measuring 4 m * 9

Question

Find the number of square tiles to cover the floor of a room measuring 4 m * 9 m leaving 0.25 m space around the room. A side of square tile is given to be 25
cms?

Options:

A . 425

B . 476

C . 450

D . 350

Answer: Option B

3 1/2
* 8 1/2 = 1/4 * 1/4 * x => x
= 476

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