Area calculator
Rectangle, triangle, circle, trapezoid, ellipse, sector, …
Calculator
How to use
Triangle
Heron for three sides.
Educational use only. For assessments, show reasoning and check boundary cases.
Rectangle, triangle, circle, trapezoid, ellipse, sector, …
Heron for three sides.
Educational use only. For assessments, show reasoning and check boundary cases.
Model / formula
Area formulas
Result
A = 20.000000