Mathematics Question and Solution
Sir Mike Ambrose is the author of the question.
Inscribed square single side length is;
7.80540954246 cm
Area green in cm² to 1 decimal place is;
Area trapezoid with parallel sides 12 cm and 7.25948291225 cm, and height 12 cm - Area square with side 7.80540954246 cm - Area triangle with height 7.25948291225 cm and base 2.86780856615 cm.
= ½*12(12+7.25948291225) - 7.80540954246² - ½*7.25948291225*2.86780856615
= 115.556897474 - 60.9244181255 - 10.4094036408
= 44.2230757077 cm²
≈ 44.2 cm²
