Grades 9-10 Video Solutions 2023-2023_9-10

Video Transcription

Video Summary

The problem involves finding the perimeter of a park by analyzing its divided regions on a map. The initial calculation includes the outer and some inner lines as parts of the perimeter. To correct this, the inner dashed lines (F, G, and H) are subtracted from the initial sum, as these were mistakenly included. However, this subtraction also inadvertently removes the necessary dotted line (K), which needs to be re-added to accurately reflect the outer perimeter. The final calculation is \(42 - 20 + 4\), resulting in a total perimeter of 26 kilometers.

Keywords

perimeter calculation

park map analysis

inner dashed lines

outer perimeter

corrected perimeter