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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