Math & Algebra
Area Calculator
Circle, rectangle, triangle.
Educational estimates only. Not medical, legal, tax, or financial advice.
Guide: Area Calculator
What it does
Applies standard area formulas per shape.
How to use it
Choose shape, enter required lengths, then calculate.
Formula
Examples: rectangle A = w×h; circle A = πr².
Example
Radius 7 → circle area ≈ 153.94 square units.
FAQs
Which units should I use?
Use consistent units; area is in square of those units.
Triangle with three sides?
Use Heron’s formula if base and height aren’t available.
π precision?
Results depend on the π constant used; suitable for homework and estimates.