Question 1
SEAMO self-study edition 2027; not an official 2027 paper. Original source years are retained. 25 questions, 90 minutes; Q1–10: 3 points, Q11–20: 4 points, Q21–25: 6 points, total 100. Original response types and all subparts are preserved. Verified is an editorial convention; source defects, necessary assumptions and unresolved mathematical uncertainty are disclosed.
The figure is made up of two squares. Their total area is 80 cm². Find the side length of the smaller square.
Source limitation: no length ratio, equal-length marks or integer-side condition is stated, so the requested side length need not be unique. Explain what can and cannot be determined; this item is assessed manually.
The figure is made up of two squares. Their total area is 80 cm². Find the side length of the smaller square.
Source limitation: no length ratio, equal-length marks or integer-side condition is stated, so the requested side length need not be unique. Explain what can and cannot be determined; this item is assessed manually.