Practice problems finding area of parts of circles.

In this exercise, students practice problem solving the area and circumference of circles. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

Practice finding the area of circle.

The geometry resource investigates surface area. Formulas, examples, and practice exercises are included.

Students solve for the area of rectangles, squares, triangles, trapezoids, and parallelograms.

The Math Forum offers an archive of question and answer sessions on circles and how they relate to geometry.

This site gives formulas for the area, volume, and surface area of various shapes.

This activity can be used as a formative assessment review of algebra and coordinate geometry.

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.

This site explains a method for finding the surface area of a cone. It has several plane geometry formulas.

Students are able to manipulate a parallelogram on a coordinate grid to explore properties of a parallelogram and then calculate the distance of the sides, altitude, and area. The resource also includes links to further explain important...

This activity is a based on an activity I saw in Exploring Geometry with the Geometer's Sketchpad. Student will construct a trapeziod and then use rotation to create a parallelogram from the trapeziod. The follow up questions lead the...

[Free Registration/Login may be required to access all resource tools.] Find the surface area of rectangular prisms by using formulas

This study guide on circumference and arc length covers key vocabulary, the parts of a circle, and formulas for circumference, area, and arc length. It is available for download with free registration.

Formulas on calculating the area of a general quadrilateral and special cases of quadrilaterals.

Demonstrates the logic behind the formula for the area of a triangle. Includes several practice problems and their explanations.

Try these challenge problems involving area and circumference.

[Free Registration/Login may be required to access all resource tools.] Given a perimeter or area of a figure, use formulas to solve for the unknown or missing dimensions.

[Free Registration/Login may be required to access all resource tools.] Find the surface area of cylinders using formulas

[Free Registration/Login may be required to access all resource tools.] Use a formula and given information to calculate the surface area of different prisms.

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

This lesson focuses on the characteristics of a circle including similarity, radius, circumference, and Pi. It provides formulas to determine the area of a circle, calculating Pi, and learning exercises throughout.

[Free Registration/Login may be required to access all resource tools.] Find the perimeter of squares and rectangles.

Students will work in cooperative groups to discover the relationships between arc length, central angle measure, and circumference. They will also discover the relationship between circle area, central angle measures, and sector area....