**Answer:**

Let the two triangles be ABC and DEF with altitudes AP and DQ,

Given,

∆ ABC ~ ∆ DEF.

The ratio of areas of two similar triangles is equal to the ratio of squares of their corresponding altitudes.

The ratio of their areas is 4 : 9

**Answer:**

Let the two triangles be ABC and DEF with altitudes AP and DQ,

Given,

∆ ABC ~ ∆ DEF.

The ratio of areas of two similar triangles is equal to the ratio of squares of their corresponding altitudes.

The ratio of their areas is 4 : 9