The length of the room is 10m and width is 20m. Find the cost of paving the floor by slabs at the rate of Rs.400 per sq meter?  Answers
A) 70000	B) 80000	C) 60000	D) 50000	E) 20000
l=10m w=20m   area of the floor = 10 x 20 = 200 sq m   cost of paving = 400 x 200= Rs. 80000   Answer: 80000
<result>B</result>
The length of the room is 10m and width is 20m. Find the cost of paving the floor by slabs at the rate of Rs.400 per sq meter?