Question

Triangle RJM has an area of 13 and a perimeter of 21. If the triangle is dilated by a scale factor of 3 centered at the origin, what are the area and perimeter of its image, triangle R'J'M'? * Your answer

Answer 1

`\begin{gathered} \Delta RJM\colon \\ A=13 \\ P=21 \end{gathered}`

After the dilatation:

`\begin{gathered} \Delta R^(\prime)J^(\prime)M^(\prime)\colon \\ A=3*13=39 \\ P=3*21=63 \end{gathered}`