A room is $8 m$ long and $5 m$ broad. Find the cost of covering the floor of the room with 80cm wide carpet at the rate of rs. $225$ per metre.

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Solution

Area of floor $8 \times 5 = 40 m^{2}$
length of carpet to be used $\frac{40}{0.8} = 50 m$
total cost $= 50 \times 225 = 11250$

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