We see, there is a pair of sides that have similar lengths before and after the enlargement.
-> The scale factor = 30 : 18 (or) 35 : 21 = 5/3
Recheck :
18 x 5/3 = 30
18 x 5/3 = 30
21 x 5/3 = 35
Answer:
20 i think so
Step-by-step explanation:
mabye help full