Answer:
C≈40.21cm
Step-by-step explanation:
#3 is 4:5:8
#4 is 5:3:10
I think those are the answers, hope that helped.
Pemdas
mutliply first
5*5=25
now we have
25+9+2+2-4+6-2-3
34+2+2-4+6-2-3
36+2-4+6-2-3
38-4+6-2-3
34+6-2-3
40-2-3
38-3
35
Hope i help <span>42/2= 21
21 / 3 = 7
Answer=2 x 3 x 7</span>