the floor of rectangular hall has a perimeter 250 cm and height 6cm find the area of 4 walls
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2(l+b)=250
l+b=125
area of 4 walls = 2h(l+b)
=2*6(125)
=12*125
=1500cm sq. = ANSWER
l+b=125
area of 4 walls = 2h(l+b)
=2*6(125)
=12*125
=1500cm sq. = ANSWER
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