Question 1009391
Let height of the brick    h=x inch
Then
          length(l)=4x-2 inch
&        width(b)=2x-1inch
  Now sum the dimensions
i.e.        l+b+h=28.5
              4x-2+2x-1+x=28.5       [invoke liner "x"]
                 x= 4.5 inch or (x=4.5")
 Using this value we get l=16" , b=8" , h= 4.5"
 [A brick is in cuboid shape so we find the volume by using the formula of cuboid ]
Now the volume of brick =length譿idth議eight unit cube
                                             =16󭅈.5 inch cube
                                             =576"cube