Everyday Math Essentials
Cover quick calculations for percentages, fractions, averages, and ratios used in school, shopping, and spreadsheets.
▭ Rectangle Calculator
Calculate area, perimeter, and diagonal of rectangles
About Rectangles
A rectangle is a quadrilateral with four right angles and opposite sides equal.
Formulas
- Area: A = length × width
- Perimeter: P = 2(length + width)
- Diagonal: d = √(length² + width²)
Frequently Asked Questions
What is a square?
A square is a special rectangle where length = width (all sides equal).
How to find diagonal?
Use Pythagorean theorem: diagonal = √(length² + width²)
🧭 Guided Journeys
Use a workflow instead of stopping at one result
These grouped paths are designed to help you continue with the most common follow-up calculations in this category.
Algebra & Equations
Move from powers and logarithms into more advanced solving tools when the problem gets more complex.
Geometry & Measurement
Calculate dimensions, area, and triangle relationships using a connected geometry workflow.