This question was uploaded on 02/02/22 on social media accounts.
Solution:
Area of triangle = (a)(b)sin(C)/2
From this formula, if the angle is common, then:
\[\color{black} {\frac{\color{red}{A_{Red}}}{\color{blue}{A_{Blue}}}=\frac{\color{red}{(k)\times(r)}}{\color{blue}{(4k)\times(r)}}=\frac14}\]
