Find the number of square tiles to cover the floor of a room measuring 4 m * 9 m leaving 0.40 m space around the room. A side of square tile is given to be 40 cms? Select.
A) 164
B) 476
C) 268
D) 208
E) 276
Area of the room =3.2 * 8.2= 
<gadget id="calculator">3.2 * 8.2</gadget>
<output>26.24</output>
26.24   Area of the tile= 0.4 *0.4= 
<gadget id="calculator">0.4 *0.4</gadget>
<output>0.16</output>
0.16   No. of tiles=26.24/0.16= 
<gadget id="calculator">26.24/0.16</gadget>
<output>164</output>
164   164nswer : 164
<result>A</result>
Find the number of square tiles to cover the floor of a room measuring 4 m * 9 m leaving 0.40 m space around the room. A side of square tile is given to be 40 cms?