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Calculating green area EFB (area triangle).Notice.FO = CD.AO = BF = AE = 4 units.Where;AE and BF are the height and base of green triangle area EFB.It implies;Area EFB is;½*BF*AE= ½*4*4= 8 square uni...
Calculating r, radius of the inscribed circle and area ABCD (isosceles trapezoid).Notice.Triangle AOD is a right-angled triangle tana = 3/2a = atan(3/2)°tanb = 2/3b = atan(2/3)°Calculating r, radius...
Calculating x.a² = 1²+1²a² = 2a = √(2) units.b = ⅛*180(8-2)b = ⅛*180*6b = 135°b is the single interior angle of a regular octagon with side length √(2) units. Half the regular octagon is derived to i...
Calculating r, radius of the ascribed quarter circle.a = 2r units.a is the diameter of the complete circle (2 radius).a = ½(8)a = 4 units.b²+a² = r²b² = r²-4²b = √(r²-16) units.c = b-3c = (√(r²-16)-3...
Calculating area blue.a² = 15²+15²a² = 2(15²)a = √(2(15²))a = 15√(2) cm.cosb = 21/(15√(2))b = acos(21/(15√(2)))b = 8.13010235416°c = 45+bc = 53.13010235416°d² = 21²+15²-2*15*21cos53.13010235416d = 16...
