Grades 7-8 Video Solutions 2026-2026_7-8

Video Transcription

Video Summary

The solution uses the fact that for four rectangles meeting at a corner, the product of opposite areas is equal. By splitting the figure into a 3×3 grid, it finds unknown parts step by step using this rule. First, \(X = 6\), so the adjacent part is 18. Then \(Y = 15\). Next, the top-right rectangle has area 5, and the last unknown is 10. The gray region is the sum \(5 + 10 = 15\). So the area of the sixth rectangle is <strong>15</strong>.

Keywords

rectangle area

grid partition

opposite areas

geometry puzzle

area calculation