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. 60 per square m? Answers:
A) Rs. 50000	B) Rs. 52000	C) Rs. 57000	D) Rs. 60000	E) Rs. 61000
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= 60 * 950   = Rs. 57000   Rs. 57000
<result>C</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. 60 per square m?