Mathematics · Geometry
The area of a ΔABC is one unit. DE is a straight line parallel to BC, joining the points D and E on AB and AC respectively such that AD : DB = 1 : 6. The ratio of the areas of ΔADE and ΔABC is:
- 11 : 7
- 21 : 6
- 31 : 49✓
- 41 : 36
Correct answer
1 : 49
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