Question

Can someone help me with this asap

Answer 1

18 = 90, 15 = 75 21 = 105

Explanation:

Multiply all the sides by 5 since the scale factor is 5

Answer 2

198

Explanation:

scale factor of 5

18 × 5 = 90

15 × 5 = 75

21 × 5 = 105

105 + 75 + 18 = 198

(please keep in mind that it has been a while since i last had to work on something like this and i'm not sure if its 100% correct)

hope this helped