New width: 10 cm, new length: 15 cm
Or new width 15 and new length 10
1) Since this rectangle, has been scaled up by a factor k=5 (since 5 >1 then the rectangle has been enlarged)
2) Then we can write the following about their new dimensions:
w = 2 x 5 = 10
l = 3 x 5 = 15
3) So the answer is 10 x 15