- A28 m
- B11 m
- C24 m
- D22 m
Step-by-Step Solution
The horizontal sides are 8 − 1 = 7 m and the vertical sides are 5 − 1 = 4 m. Fencing once around means the perimeter: 2 × (7 + 4) = 22 m. (28 would be the area in square metres.)
Answer: D) 22 m
A rectangular garden is marked on a grid with corners at (1, 1), (8, 1), (8, 5) and (1, 5), where 1 unit stands for 1 metre. How many metres of fencing are needed to go once around it?
Class 9Coordinate GeometryCoordinate Geometry
Key idea: Reading coordinates
Given a point on a graph:
1. Drop a perpendicular to the -axis. Where it hits is the -coordinate.
2. Drop a perpendicular to the -axis. Where it hits is the -coordinate.
3. Combine: .
Reverse if you're given coordinates: read first (horizontal direction), then (vertical direction). Don't swap their roles.
1. Drop a perpendicular to the -axis. Where it hits is the -coordinate.
2. Drop a perpendicular to the -axis. Where it hits is the -coordinate.
3. Combine: .
Reverse if you're given coordinates: read first (horizontal direction), then (vertical direction). Don't swap their roles.
Master this chapter in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Coordinate Geometry practice questions
More Class 9 Coordinate Geometry practice
The points A(−3, 0), B(0, 4) and C(3, 0) are joined to form a triangle. What is its…To plot (−2, 5), Riya starts at the origin, moves 2 units up and then 5 units to the…On a reading chart the horizontal axis shows the day number and the vertical axis shows…A shop plots (month number, bags sold) and gets the points (1, 20), (2, 35), (3, 50) and…A point has its abscissa equal to its ordinate and lies 6 units below the x-axis. What…