(i) The fourth foot is at (8, 7). (ii) It depends on light and space. (iii) Width is 2 units, length is 3 units. Height cannot be determined from a 2-D coordinate plane.
Place Reiaan’s rectangular study table with three of its feet at the points (8, 9), (11, 9) and (11, 7). (i) Where will the fourth foot of the table be? (ii) Is this a good spot for the table? (iii) What is the width of the table? The length? Can you make out the height of the table?
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(i) To form a rectangle, the fourth foot must align with the x-coordinate of the first point and the y-coordinate of the third, placing it at (8, 7). (ii) This spot depends on room layout; if it is near a window, it is good. (iii) The width is 2 units (9 minus 7) and the length is 3 units (11 minus 8). We cannot determine height because coordinates only show 2-D horizontal and vertical positions.
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/