SOF IMO · Heron's Formula · Quiz
5 real SOF IMO questions on Heron's Formula. Instant scoring and solutions, no signup — see where you stand in ~3 minutes.
Question 1 of 5
MEDIUMA quadrilateral field ABCD has sides AB = 9 m, BC = 12 m, CD = 15 m and DA = 10 m. The diagonal AC divides it into two triangles. If triangle ABC has sides 9 m, 12 m and AC = 15 m, and triangle ACD has sides AC = 15 m, CD = 15 m and DA = 10 m, find the total area of the quadrilateral.