The keyword is "sum" which tells you x, y, and z are being added. One half of the sum means that the sum of the three numbers is going to be divided by 2.
x + y + z
------------
2
lateral area = 2 X pi X r X H
= 2 x 3.14 x 5 x 9 = 282.6
Answer:
6-2
Step-by-step explanation:
so first you know you will have to divide it by both numbers you have and whatever number u have thats your answer
