a room is 8m long, 5m board and 4m high how many pieces of carpet each of 2.5 Long and 2m wide are required to carenting the floor

You ignore the 4m tall of the room because the floor area is what you want. Formula for area is then length times width. 8x5=40m^2. For 1 carpet it's 2.5x2=5m^2. So 1 carpet is 5 metre squared area, your room is 40 metre squared area. So how many carpets do you need for 1 room?

according to this law, when unemployment goes up by 1%, gdp drops by 2%. in the question, unemployment rate goes from 2% to 5%, meaning unemployment goes up by 3%, so the gdp drops by 6%. thus the effect is a drop in gdp by 6%.

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