Mathematics Question and Solution
Area red is;
Area semi circle with radius 5 cm - Area sector with radius 5 cm and angle (180-2atan(2))° - Area kite with diagonal lengths √(10²+5²) cm and √(200-200cos(2atan(½))) cm + Area sector with radius 10 cm and angle 2atan(½)° - 2(area quarter circle with radius 5 cm - area triangle with height and base 5 cm respectively).
= 12.5π - 11.591190225 - 50 + 46.3647608999 - 14.2699081699
= 9.77357067487 cm²
