the area of four walls of a room is 150msq .if the length of the room is twice its breath and the height is 4m,find the area of the floor
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let the breadth be X
so length will be 2X
and height = 4
area of four walls = 2( lh + bh)
150= 2(2X×4 + X×4)
150=2(8X + 4X)
150=2(12x)
150=24x
X= 150÷24
or X= 25 ÷ 4
length = 25 ÷2
so length will be 2X
and height = 4
area of four walls = 2( lh + bh)
150= 2(2X×4 + X×4)
150=2(8X + 4X)
150=2(12x)
150=24x
X= 150÷24
or X= 25 ÷ 4
length = 25 ÷2
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