Similar Triangles: Finding Area Ratio from Similarity Ratio of 7

Question

The similarity ratio between two similar triangles is 7, so that the area ratio is $_{——}$

00:00 Find the area ratio between the triangles

00:03 The triangles are similar according to the given data

00:09 The area ratio between the triangles equals the similarity ratio squared

00:22 And this is the solution to the question

We square it. 7 squared is equal to 49.