Mathematics Question and Solution
Sir Mike Ambrose is the author of the question.
Area red is;
Area triangle with two side 4 cm and 8 cm, and angle 110°.
= 0.5*4*8sin110
= 15.0350819326 cm²
Area blue is;
Area triangle with height 4.47952822702 cm and base (4.47952822702tan33.67018696) cm
= 0.5*4.47952822702*4.47952822702tan33.67018696
= 6.6836970062 cm²
Therefore;
Area Blue + Area Red in cm² to 2 d. p. is;
6.6836970062 + 15.0350819326
= 21.7187789388 cm²
≈ 21.72 cm²
