A hall is 15m long and 12m broad.If the sum of the areas of the floor and the ceiling is equal to the sum of areas of the four walls, the volume of hall is?  Choose the correct choice
A) 1100 B) 1200 C) 1300 D) 1400 E) 1500
area of 4 wall=sum of area of floor and celling   2(l+b)*h=2(l*b)   (15+12)*h=2(12*15)   on solving h=20/3m   volume=l*b*h   =12*15*20/3= 
<gadget id="calculator">12*15*20/3</gadget>
<output>1_200</output>
1200m^3   ANSWER:1200
<result>B</result>
A hall is 15m long and 12m broad.If the sum of the areas of the floor and the ceiling is equal to the sum of areas of the four walls, the volume of hall is?