All math areasNumber and quantity, simplifying square roots
Problem 1 of 14num-001
Which of the following is equal to ?
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Solution walkthrough1:29
- A square with area has side length . Cut the square into smaller equal squares to simplify it.
- Look for a perfect square inside : , and .
- Each small square has area , so its side is . The squares sit to a side.
- The big side is small sides in a row: .
- Traps: forgets to take the root of , swaps the numbers, and is just .