Skill 4 of 9 · GeometryClose

Pythagorean theorem

Use the Pythagorean theorem a² + b² = c² to find a side length in a right triangle.

  • c is always the hypotenuse — the side across from the right angle.
  • Legs 3 and 4: 3² + 4² = 9 + 16 = 25, so c = 5.

Question 1 of 4

The foundation of a building is a rectangle with a length of 20 meters (m) and a width of 18 m.

To the nearest meter, what is the distance from the top left corner of the foundation to the bottom right corner?

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