Directions· Multiple Choice Questions
In the following problems, you are given four answers. Choose the right answer.
There is only ONE correct answer to each question.
[Figure: a stepped (staircase-shaped) rectilinear outline whose overall bounding width is 7 cm and overall bounding height is 5 cm.] What is the perimeter in centimeters of the figure?
- 24
- 26
- 28
- 30
Show answer
Correct answer: A. 24
Why
For a rectilinear staircase outline, the total length of all the horizontal segments equals the bounding width (7 cm) and the total length of all vertical segments equals the bounding height (5 cm), each counted on both sides — perimeter = 2 × (7 + 5) = 24 cm.
