The length and breadth of a rectangular plot are l and b. Two rectangular paths each of width 'r' run inside the plot one parallel to the length and the other parallel to the breadth. What is the total area of the paths?

\[1b-\left( 1-2r \right)\left( b-2r \right)\]

The length and breadth of a rectangular plot are l and b. Two rectangu

1.	The length and breadth of a rectangular plot are l and b. Two rectangular paths each of width 'r' run inside the plot one parallel to the length and the other parallel to the breadth. What is the total area of the paths?
A.	\[(1+r)(b+r)-1b\]
B.	\[1b-(1-r)(b-r)\]
C.	\[\left( 1+b-r \right)r~\]
D.	\[1b-\left( 1-2r \right)\left( b-2r \right)\]
Answer» D. \[1b-\left( 1-2r \right)\left( b-2r \right)\]

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The length and breadth of a rectangular plot are l and b. Two rectangular paths each of width 'r' run inside the plot one parallel to the length and the other parallel to the breadth. What is the total area of the paths?

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