Mathematics Question and Solution
Sir Mike Ambrose is the author of the question.
Let BC be 1 unit.
Therefore;
AB = 2 units.
Area ACDE is;
3²
= 9 square units.
Area purple is;
Area triangle with height 1.23931367493 units and base 0.3320730983 units + Area trapezoid with two parallel side 0.2679491924 units and 1.07179676983 units, and height 1 unit.
= ½(1.23931367493*0.3320730983) + ½(0.2679491924+1.07179676983)
= 0.2057713659+0.66987298112
= 0.87564434702 square units.
Therefore;
Area Square ACDE ÷ Area Purple to 1 decimal place is;
9 ÷ 0.87564434702
= 10.2781454944
≈ 10.3
