This is the concept of transformation of figures, given that ΔABC is similar to ΔPQR, the sides of ABC are 5 units, 4.2 units and 4 units. Since the two triangles are similar and PQR is the image of ABC under the dilation 1.25, the sides of PQR will be: (5*1.25),(4.2*1.25),(4*1.25) this will give us: 6.25, 5.25, 5 The length of the sides of PQR are 6.25 units, 5.25 units and 5 units Hope you get a good grade