Maths Challenge
Maths challenge.net: Curvature of the Earth
Distance problem using a spherical radius and height.
Other
Ic Teachers: Shapes, Circles (Basic)
This basic website will give you lots of information about circles. There are also some questions to test your circle knowledge.
Texas Instruments
Texas Instruments: Circles: Circumference and Area
The idea of perimeter can be applied not only to polygons but to circles as well. The same idea can be said for the area of a circle. (Continued. See "before the activity.") [Requires Adobe Reader.]
McGraw Hill
Glencoe Mathematics: Online Study Tools: Circumference and Area of Circles
This site gives a short interactive quiz which allows students to self-assess their understanding of the concept of finding the circumference and area of circles.
McGraw Hill
Glencoe Mathematics: Online Study Tools: Self Check Quiz on Circles
Students show comprehension of advanced mathematics skills in Geometry. The questions check understanding on circles. Topics include diameters, angles, and finding the circumference.
Mangahigh
Mangahigh: Shape: Circumference of a Circle
Determine the circumference of a circle or simple arc lengths.
Mangahigh
Mangahigh: Shape: Radius and Tangent Rule for Circles
Determine the rules for radius and tangents of circles.
Mangahigh
Mangahigh: Shape: Estimate the Area of Shapes
Test your knowledge of determing the area of irregular shapes.
Discovery Education
Discovery Education: Web Math: Find Out Things About Circles
This WebMath site will assist with finding the radius, diameter, circumference, and area of a circle.
Math Is Fun
Math Is Fun: Cone
The resource investigates a cone. Students learn about surface area, volume, and different types of cones. Definitions, animations, formulas, and practice questions are included.
Math Is Fun
Math Is Fun: Cylinder
The resource investigates the cylinder. Students learn about surface area, volume, and different types of cylinders. Definitions, animations, formulas, and practice questions are included.
Texas Instruments
Texas Instruments: Simple Programs to Apply Formulas
Students learn how to write simple programs to evaluate formulas in several variables for lists of data. They apply these skills to the computation of areas, volumes and surface areas of familiar geometric solids.
Oswego City School District
Regents Exam Prep Center: Area of Polygons and Circles
A lesson focusing on the area of polygons and the circumference of circles. Engaging, interactive practice worksheet, lesson plan, and related classroom activity complete this lesson.
Analyze Math
Analyze Math: Cone Problems
The geometry tutorial explores problems related to the surface area and volume of a cone. The activity has several examples with detailed solutions.
Analyze Math
Analyze Math: Compare Volumes of 3 D Shapes
The tutorial investigates the volumes of a cone, a cylinder, and a hemisphere. The problem includes a detailed solution.
Oswego City School District
Regents Exam Prep Center: Spheres
What is a sphere? Find a definition, example images, and formulas to help you determine volume and surface area given the radius.
Oswego City School District
Regents Exam Prep Center: Cones
What is a cone? Find a definition, example images, and formulas for determining volume and surface area.
Math Planet
Math Planet: Calculating the Circumference of a Circle
Gain an understanding of how to find the diameter of a circle by viewing an example and a video lesson. [1:01]
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.
Illustrative Mathematics
Illustrative Mathematics: G Gmd Area of a Circle
For this task, learners investigate and develop an understanding of the formula for the area of a circle. Aligns with G-GMD.A.1.
Illustrative Mathematics
Illustrative Mathematics: G Gmd Circumference of a Circle
For this task, students are asked to explain the formula for finding the circumference of a circle. Aligns with G-GMD.A.1.
Math Open Reference
Math Open Reference: Circles
A complete reference guide to circles including parts, angles, and arcs. It provides definitions and interactive activities that enhance further explanation.
CK-12 Foundation
Ck 12: Geometry: Surface Area and Volume of Cones
[Free Registration/Login may be required to access all resource tools.] Find a cone's volume and surface area.