the length of a rectangle is Y units. if it's breadth is 4 units less than its length, find its perimeter
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Solution :
Dimensions of the rectangle :
Length ( l ) = y units
Breadth ( b ) = ( y - 4 ) units
Perimeter ( P ) = 2( l + b )
= 2( y + y - 4 )
= 2 ( 2y - 4 ) units
Or
= 4( y - 2 ) units
Or
= ( 4y - 8 ) units
••••
Dimensions of the rectangle :
Length ( l ) = y units
Breadth ( b ) = ( y - 4 ) units
Perimeter ( P ) = 2( l + b )
= 2( y + y - 4 )
= 2 ( 2y - 4 ) units
Or
= 4( y - 2 ) units
Or
= ( 4y - 8 ) units
••••
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