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 10 cms? Choose the correct option
A) 187 B) 476 C) 268 D) 2975 E) 276
Area of the room =3.5 * 8.5= 
<gadget id="calculator">3.5 * 8.5</gadget>
<output>29.75</output>
29.75   Area of the tile= 0.1 *0.1= 
<gadget id="calculator">0.1 *0.1</gadget>
<output>0.01</output>
0.01   No. of tiles= 29.75/0.01= 
<gadget id="calculator">29.75/0.01</gadget>
<output>2_975</output>
2975   Answer : 2975
<result>D</result>
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 10 cms?