The bathroom door width is the difference between y-coordinates: 4 minus 1.5 equals 2.5 units. Since the room door is also 2.5 units wide, both doors have exactly the same width.
If B1 (0, 1.5) and B2 (0, 4) represent the ends of the bathroom door, is the bathroom door narrower or wider than the room door?
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To compare the doors, we calculate their lengths. The room door width is 2.5 units (11.5 minus 9). The bathroom door lies on the y-axis, so we subtract its y-coordinates: 4 minus 1.5 equals 2.5 units. Since both calculations result in a distance of 2.5 units, the bathroom door is neither narrower nor wider; both the room door and the bathroom door are equal in width.
For Detailed Solutions:
Visit NCERT Solutions for Class 9 Ganita Manjari Chapter 1 Orienting Yourself: The Use of Coordinates Question Answer:
https://www.tiwariacademy.com/ncert-solutions/class-9/maths/ganita-manjari-chapter-1/