If ∆ABC ∼ ∆PQR with 
is equal to
By Similar Triangle’s Area property, the ratio of the areas of two similar triangles is equal to square of the ratio of their corresponding sides.
Thus, the area of ΔPRQ = 9 times ΔBCA
9
If ∆ABC ∼ ∆PQR with is equal to
By Similar Triangle’s Area property, the ratio of the areas of two similar triangles is equal to square of the ratio of their corresponding sides.
Thus, the area of ΔPRQ = 9 times ΔBCA