so since only 3 out of 11 went to visit then it is simple
since just 3 went and there were 11
3/11 of the students went
4 40
5 50
6 60
7 70
8 80
9 90
10 100
11 110
12 120
13 130
14 140
15 150
16 160
17 170
18 180
Answer: 17 is A and 18 is B
Used a calculator to add them all up! Get some sleep hope this helps.
17) 2(3x8)+2(3x6)+2(6x8) = 180
18) 4(9x2)+2(9x9) = 234
Well area triangler area is multiplied by 3 after you multiply the other numbers
