Continuous function
"Left" and "right" functions are equal at point
π∫ (axis - top)² - (axis - bottom)²
Integral area function formula square
∫ [multiplier] (top-bottom)^[something]
Differentiable graph
No corner, cusp, vertical line
Integral area function formula "base"
Top-bottom
Integral area function formula equilateral triangle
(√3 )/4 * base²
Continuous graph
No holes, jumps, asymptotes
π/8 * base²
Differentiable function
Revolve 2 equations over axis
π∫ top² - bottom²
1/2 base²
Base * height
