The first thing he has to do is take that "minus" sign through the parentheses containing the second polynomial. Some students find it helpful to put a " 1 " in front of the parentheses, to help them keep track of the minus sign. Here's what the subtraction looks like, when working horizontally.
Answer:
549.78
Step-by-step explanation:
V=πr2h=π·52·7≈549.77871
This ordered pair makes both statements true, so A, B, and D are all the correct answers!
