2. A wall is 20 meters long and 8 meters high. It has a door measuring 3 x 2 inches. How much does it cost to paint this wall at 8 per square meter?
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Step-by-step explanation:
given 20m long and 8m high
area of wall = 20×8m^2
= 160m^2
area of a door = 18/100
= 9/50
= 0.18m^2
= 160-0.18
= 159.82m^2
cost to paint this wall = 159.82×8
= ₹ 127856
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