Question 18
The diagram shows how an equilateral triangle can be cut into four pieces and
rearranged to form a square. This solution of the Haberdasher’s Puzzle is
discovered by Henry Dudeney (1857 — 1930).
If the length of the square is 26 cm, find the length of the triangle, correct to
nearest whole number. (Note: q = 1.52, correct to three significant figures)

rearranged to form a square. This solution of the Haberdasher’s Puzzle is
discovered by Henry Dudeney (1857 — 1930).
If the length of the square is 26 cm, find the length of the triangle, correct to
nearest whole number. (Note: q = 1.52, correct to three significant figures)
