Mathematics Question and Solution
Sir Mike Ambrose is the author of the question.
Area green exactly in decimal is;
Notice.
Square side is (16/√(17)) units.
Area trapezoid with parallel sides (16/√(17)) units and (4/√(17)) units, and height (16/√(17)) units - Area triangle with height (16/√(17)) units and base (4/√(17)) units - Area triangle with height (16/√(17)) units and base 3.1067961165sin(atan(13/16)) units.
= ½*(16/√(17))((16/√(17))+(4/√(17))) - ½*(16/√(17))(4/√(17)) - ½*(16/√(17))*3.1067961165sin(atan(13/16))
= (160/17) - (32/17) - 3.80125642489
= 3.72815533982 cm²
