Practice Quiz

SAT Math

Category - Geometry and Measurement

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What is the perimeter of the rectangle in the figure below?
  1. 12
  2. 14
  3. 16
  4. 18
  5. 20
Explanation
Answer: B - The perimeter of the rectangle is 14. Find AC using the Pythagorean Theorem.
AC^2=AD^2-CD^2=5^2-3^2=25-9=16
AC=√16=4
P=2(a+b)=2(AC+CD)=2(4+3)=2×7=14
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