Answer:
p = 21
Step-by-step explanation:
Given that ∆ABC ~ ∆FGH, therefore, the length of their corresponding sides would be proportional. This implies that:
AB/FG = AC/FH
AB = 35
FG = p
AC = 30
FH = 18
Substitute
35/p = 30/18
Cross multiply
p*30 = 35*18
30p = 630
30p/30 = 630/30
p = 21
