IKMC 2027 - Grades 7-8 - Self-study SET 15 - Thematic Batch 3 Question 12

Equilateral triangle ABC has area 40 cm². Draw right-isosceles triangle ACD with hypotenuse AC, then equilateral triangle CDE. Similarly draw right-isosceles triangle DEF and equilateral triangle EFG, as shown. What is the area of EFG?