Can someone please help me work out how to find S?
(Question 5)

➷ Substitute the given values into the equation:
s = 1/2(18 + 14) * 100
Now solve:
s = 1600
➶ Hope This Helps You!
➶ Good Luck (:
➶ Have A Great Day ^-^
↬ ʜᴀɴɴᴀʜ ♡