Question
In two similar triangles ABC and DEF, AB = 5cm, DE = 9cm If the area of DEF is 405 cm² then area of ABC = cm².
- 225
- 350
- 125
- 100
The correct answer is: 225
To find the area of ABC.
In two similar triangles ABC and DEF, AB = 5cm, DE = 9cm If the area of DEF is 405 cm² .
We know that the ratio of area of two similar triangles is equal to the ratio of squares of their corresponding sides.
= .
= .
ABC = 125 .
Therefore, area of ABC is 125 .
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