Two perpendicular cross roads of equal width run through the middle of a rectangular field of length 80 m and breadth 60 m. If the area of the cross roads is 675 m², find the width of the roads.
A10 m
B5 m
C12 m
D11 m
A10 m
B5 m
C12 m
D11 m
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A cow is tied on the corner of a rectangular field of size 30 m ×20 m by a 28m long rope. The area of the region, that she can graze, is :