Geometry Help
Geometry Help: Area of Geometric Shapes
Explains the basic concept of the area of geometric shapes with step-by-step instructions and methods for solving specific problems on your own relating to this topic.
The Math League
The Math League: Surface Area
This tutorial explains the concept of surface area, and then goes through multiple shapes offering the specific surface area formula for each one.
Science Struck
Science Struck: A Comprehensive Printable List of Geometry Formulas
Provides a list of area and perimeter formulas for two-dimensional shapes and volume and surface area formulas for three-dimensional solids.
Oswego City School District
Regents Exam Prep Center: Area of Polygons and Circles
How would you find the area of a polygon or circle? Explore this concept with engaging activities at this test prep site. Here you will find detailed problem solving strategies with accompanying visuals, a reference table with formulas,...
Science Buddies
Science Buddies: M&m Geometry
Geometry is the study of how to use math to describe and investigate different points, lines and shapes. The way that a shape is described in geometry is with a formula, which is simply a mathematical way to calculate different...
Math2
Math2.org: Areas, Volumes, Surface Areas
This site gives formulas for the area, volume, and surface area of various shapes.
Purple Math
Purplemath: Geometric Formula Review
Need to freshen up on your geometric formulas? This explanation focuses on some basic formulas that should be committed to memory such as area, volume, perimeter, and more.
Calculator Soup
Calculator Soup: Surface Area Calculator
Online calculator to calculate the surface area of geometric solids including a capsule, cone, frustum, cube, cylinder, hemisphere, pyramid, rectangular prism, sphere, spherical cap, and triangular prism
Purple Math
Purplemath: Geometry Word Problems: Introduction
Introduces how to set up and solve simple geometric-figure word problems. Includes advice regarding formulas to memorize.
Alabama Learning Exchange
Alex: Pump Up the Volume
In this lesson, students will be required to generate a formula for volume of a rectangular prism. Students working in cooperative groups will use prior knowledge for finding area of a rectangle to determine the "amount of area in a...
Cuemath
Cuemath: Cylinder
Mini-lesson takes a look at the definition and shape of a cylinder, cylinder formula, cylinder volume, and cylinder surface area. Try your hand at the cylinder surface area calculator and interactive questions for better understanding.
ClassFlow
Class Flow: Polygon Review
[Free Registration/Login Required] This flipchart provides a review of polygons and formulas for calculating perimeter and area in the form of assessment questions.
National Council of Teachers of Mathematics
The Math Forum: The Cylinder Problem: Middle School Lesson
This lesson offers an interesting, hands-on experience for middle school students studying cylinders. Students will create cylinders, and measure and compare their volumes.
Calculator Soup
Calculator Soup: Sphere Calculator
This online calculator will calculate the 3 unknown values of a sphere given any 1 known variable including radius r, surface area A, volume V and circumference C. It will also give the answers for volume, surface area, and circumference...
Calculator Soup
Calculator Soup: Cube Calculator
Use this calculator to calculate unknown variables for a cube such as a side length, face diagonal, solid diagonal, surface area, and volume.
Calculator Soup
Calculator Soup: Capsule Calculator
This online calculator will calculate the various properties of a capsule given any 2 known variables including radius r, side length a, surface area S, volume V and circumference C.
Curated OER
Math2.org: Areas, Volumes, Surface Areas
This personal site from Math2.org gives formulas for the area, volumes and surface areas of various shapes. Also provides diagrams.
abcteach
Abcteach: Math Posters
[Free Registration/Login Required] Most of the posters on this site are colorful math posters for primary or elementary school. However, there is one math poster that could be used in secondary school geometry class that has the formulas...