The dimension of a rectangular plot is 36m x 20m. When the breadth is decreased to 14.4 m, what will be the length of the plot if the area remains same?
Answer : 50m.
Solution :
Dimension of the rectangle plot = 36m x 20m.
Length of the plot l = 36m
Breadth of the plot b = 20m.
Area of the plot = lb = 36 x 20 = 720 m2 .
Since breadth is decreased to 14.4 m, the new breadth = 14.4 m
Note that, the area is unchanged.
new length x new breadth = 720 m2 .
New length = 720 m2 / 14.4 m = 50m.
Hence, the required length is 50m
Answer : 50m.
Solution :
Dimension of the rectangle plot = 36m x 20m.
Length of the plot l = 36m
Breadth of the plot b = 20m.
Area of the plot = lb = 36 x 20 = 720 m2 .
Since breadth is decreased to 14.4 m, the new breadth = 14.4 m
Note that, the area is unchanged.
new length x new breadth = 720 m2 .
New length = 720 m2 / 14.4 m = 50m.
Hence, the required length is 50m
