Science6 min
Area and Perimeter of Geometric Figures — Formulas and Examples
Formulas for the area and perimeter of a square, rectangle, triangle and circle. Units, the difference between area and perimeter, and step-by-step examples.
Articles tagged “mathematics”
Science6 min
Percentage and Per Mille — How to Calculate Them and How They Differ
How to calculate a percentage and a per mille of a number: the formulas, the difference between percent and per mille, converting fractions, and worked examples.
Science7 min
How to Calculate the Area of a Triangle - Formulas and Examples
The area of a triangle can be calculated in several ways. Learn the base times height formula, Heron's formula, and the side-and-angle method, with step-by-step examples.
Science6 min
How to Calculate the Volume of a Cylinder - Formula and Examples
The volume of a cylinder is calculated as pi times radius squared times height. Learn the formulas for volume and surface area, and how to convert the result to liters.
Science7 min
How to Calculate a Logarithm — Formulas and Calculator 2026
Logarithms step by step: definition, formulas, properties and worked examples. Learn how to calculate log, ln and log2 without mistakes.
Science7 min
Areas and Volumes of Geometric Solids — Formulas and Calculator
A complete set of formulas for surface area and volume of solids: cube, cylinder, cone, sphere, prism and more — with worked examples.