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VolLab
A third of the box that contains it — same idea as a cone.
Just like a cone is a third of its enclosing cylinder, a pyramid's volume is exactly a third of the rectangular box sharing its base and height: V = ⅓ × base area × height.
This is the same formula engineers and archaeologists use to estimate the volume of stone in structures like the Great Pyramid of Giza.
Volume
96
What you entered
Volume = ⅓ × base area × height
(1/3) × 6² × 8= 96Slant height (apex to base-edge midpoint)
√(8² + (6/2)²)= 8.544Surface area = base + 4 triangular faces
6² + 2 × 6 × 8.544= 138.528Result
Volume: 96
A square pyramid with base side 6 and height 8 has a volume of 96 and a surface area of 138.528.