The dimensions of a room are 10m x 7m x 5m. There are 2 doors and 3 windows in the room. The dimensions of the doors are 1m x 3m. One window is of size 2m x 1.5m and the other 2 windows are of size 1m x 1.5m. The cost of painting the walls at Rs. 3 per sq m is?  Choose the correct choice from the following.
A) Rs.229	B) Rs.429	C) Rs.129	D) Rs.474	E) Rs.111
Area of 4 walls = 2(l+b)h   =2(10+7) x 5 = 170 sq m   Area of 2 doors and 3 windows = 2(1x3)+(2x1.5)+2(1x1.5) = 12 sq m   area to be planted = 170 -12= 
<gadget id="calculator">170 -12</gadget>
<output>158</output>
158 sq m   Cost of painting= Rs. 158 x 3 = Rs. 474   Answer: Rs.474
<result>D</result>
The dimensions of a room are 10m x 7m x 5m. There are 2 doors and 3 windows in the room. The dimensions of the doors are 1m x 3m. One window is of size 2m x 1.5m and the other 2 windows are of size 1m x 1.5m. The cost of painting the walls at Rs. 3 per sq m is?