In a house a hall is 20 m long, 15m wide and 5m high. Its interior has to be covered with mat. What will be the total expenditure if it costs Rs. 10 per square m? Select
A) s.9500  B) s.50000  C) s.57000  D) s.60000  E) s.62000
Length (l) = 20 m, Breadth (b) = 15 m and Height (h) = 5 m   Total area of the hall to be covered with mat = 2(lb + bh + hl)   = 2(20 * 15 + 15 * 5 + 5 * 20)   =2(300 + 75 + 100)   = 2 * 475= 
<gadget id="calculator">2 * 475</gadget>
<output>950</output>
950 sq. m   Total expenditure= 10 * 950   = Rs.9500   s.9500
<result>A</result>
In a house a hall is 20 m long, 15m wide and 5m high. Its interior has to be covered with mat. What will be the total expenditure if it costs Rs. 10 per square m?