Last updated at April 27, 2026 by Teachoo
Transcript
Ex 1.1, 1 (iii) If R1 is the point (11.5, 0), how wide is the door? Do you think this is a comfortable width for the room door? If a person in a wheelchair wants to enter the room, will he/she be able to do so easily? The door spans along the x-axis from D₁ at (8, 0) to R₁ at (11.5, 0). To find the width, we just subtract the smaller x-coordinate from the larger x-coordinate: Width of door = 11.5 – 8 = 3.5 units Note: Based on the measurements given for the rooms, like the 12 ft × 10 ft bedroom, each unit on this graph represents 1 foot. So, the door is 3.5 feet wide Now, let’s answer the rest of the questions Is it a comfortable width? Yes! A standard interior door in a home is usually around 2.5 to 3 feet wide (30 to 36 inches). A 3.5-foot door is quite generous and very comfortable to walk through. Wheelchair accessibility Yes, a person in a wheelchair would be able to enter easily. Standard manual and power wheelchairs generally require a minimum door width of 32 inches (about 2.67 feet) to pass straight through. Since 3.5 feet (42 inches) is much wider than 32 inches, it provides plenty of clearance.