The Pythagorean theorem is useful for finding the hypotenuse of a right triangle when you know the side lengths.
(corner to top)² = (113 m)² +(188 m)²
(corner to top)² = 48,113 m²
Then, taking the square root, we find ...
(corner to top) = √(48,113 m²)
(corner to top) ≈ 219 m
The distance from the corner of the base to the top of the pyramid was about ...
219 m
