Solutions:
we are given that
△ABC∼△DEF
△ABC has a height of 14 centimeters, and △DEF has a height of 6 centimeters.
we have been asked to find the ratio of the area of △ABC to the area of △DEF ?
As we know , when two triangles are similar then their corresponding ratios are also equal.
So we can write

The ratio of the area of △ABC to the area of △DEF is 7:3