Advanced MathEasyIncrease in area from a change in side
Advanced Math practice question
The area A of a square with side length s is given by A(s) = s². By how much does the area increase when s changes from 2 to 3?
Answer: 5
A(3) − A(2) = 9 − 4 = 5.
Common wrong answers
- If you answered 1
- 1 is the change in s, not in the area.
- If you answered 9
- 9 is A(3) alone.
- If you answered 13
- 13 adds the two areas.
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