Mathematics · Geometry
In ΔABC, DE || AC, where D and E are points on sides AB and BC, respectively. If BD = 3 cm and AD = 17 cm, then what is the ratio of the area of ΔBDE to the area of the trapezium ADEC?
- 1392 : 10
- 2391 : 9
- 39 : 391✓
- 410 : 392
Correct answer
9 : 391
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