a room is 6.5 M long 4 metre wide and 4 for 4.5 M high find the area of four walls of their of the room
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Area of lateral surface of rectangle =2×hight×lenght×breadth
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area of four walls = 2(l+b)h
= 2(6.5+4)×4.5
= 2×10.5×4.5
= 21×4.5
=94.5m square
= 2(6.5+4)×4.5
= 2×10.5×4.5
= 21×4.5
=94.5m square
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