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150 resources with the concept area of circles

Lesson Planet

Area of a Circle

For Students 6th - 12th Standards
Circle back and use the resource to review area. Young pupils see how to find the area of a circle given its radius or diameter. The instructive video also shows an example of how to find the radius given the area.
Lesson Planet

Pizza Doubler

For Teachers 6th - 8th Standards
Double the pizza? What a great deal! Young pizza enthusiasts investigate two different coupons, one that doubles the radius and one that doubles the sector angle of a slice. They determine which coupon is the better deal.
Lesson Planet

Geometry: Extended Performance Task Plan for Backyard Oasis

For Teachers 9th - 12th Standards
Backyards are made for relaxing ... not doing math! Young mathematicians design a backyard based on a list of client specifications. They calculate areas, write equations for the path of a fountain, and research costs for a garden.
Lesson Planet

Packers' Puzzle

For Teachers 9th - 11th Standards
How many oranges can fit in a box? Apply the area and volume formulas learned in middle school to investigate how different arrangements of packing oranges can lead to vastly different answers.
Lesson Planet

Area of Circles

For Teachers 5th - 8th
Using a basic formula one can find the area of a circle. Duane walks learners through the steps needed to determine the missing variable, plug in the known variable, and solve to find the area of a circle. He provides two different...
Lesson Planet

How Do You Find the Volume of a Cylinder?

For Teachers 6th - 10th
What is the formula to find the volume of a cylinder? Here's the formula - volume equals base times height, and the base of a cylinder is base equals pi times radius squared. If the is a given value for radius, and a given value for...
Lesson Planet

How Do You Find the Area of a Circle if You Know the Radius?

For Teachers 6th - 8th
There are basically two things you need to know to find the area of a circle. First, you need to use the correct formula. Second, you have to know the value of the radius. If you know these two things then all you have to do is plug the...
Lesson Planet

Circumference and Area of Circles (B)

For Students 5th - 6th
In this geometry worksheet, students calculate the area and circumference of 12 circles in which either the diameter or radius is shown. There are no formulas given on this page.
Lesson Planet

Circumference and Area of Circles (A)

For Students 5th - 6th
In this geometry worksheet, students solve 12 problems in which the area and circumference of a circle is calculated to the tenth place. No formulas are given on this page.
Lesson Planet

Volume of Cylinders and Cones

For Students 7th - 8th
Line drawings of a circle, a cylinder, and a cone at the top of the page contain the formulae for area and volume of each shape. Learners complete the missing information in a chart that lists diameter, radius, height, and area and...
Lesson Planet

Areas of Polygons, Arc Length, and Area Sectors

For Teachers 10th - 12th
Math scholars explore the concept of area. In this area lesson, learners find the area of cardboard squares and circles that they have created. They use their cardboard constructions to find midpoint, area of sectors, arc length and...
Lesson Planet

Area of Circle Worksheet

For Students 6th - 10th
Given the diameter of a circle, learners are charged with finding its area. They halve the diameter, square it, and multiply by pi. Five problems provide basic practice. 
Lesson Planet

Area of a Circle When Radius is Given

For Students 5th - 8th
Five problems provide practice for learners to find the area of a circle given the distance of the radius. Answers on the key use pi as a variable and do not include fully computed numeric answers. To reinforce basic multiplication facts...
Lesson Planet

Quiz: Area of a Circle

For Students 7th - Higher Ed
Geometers test their mastery at finding the area of a circle with 10 basic problems. Circle diagrams show line segments, points, and diameter. Distance of radii are given. They use pi as 3.14 to calculate the area. No answer key is...
Lesson Planet

Finding Circumference and Area of a Circle

For Teachers 7th
Young geometers explore the concept of circumference and area of circles. They discuss what information is needed to find circumference and area. The resource employs several instructional methods: Frayer Model for Vocabulary, literature...
Lesson Planet

Area and Circumference of Circles

For Teachers 6th - 7th
Learners view two PowerPoints and practice computing the area and circumference of circles. They must use given formulas to make their computations. The lesson includes links to both PowerPoints as well as a worksheet (with answer key).
Lesson Planet

Calculate Area Using Pi

For Students 7th - 9th
Geometers find the area of four circles given their circumferences. Circumference is presented in the form of "numeral (diameter) x pi"; the answer key shows solutions as  "numeral (radius squared) x pi," so computation is limited to...
Lesson Planet

Area of a Circle: Diversified Practice

For Students 5th - 8th
Let your geometers use a calculator, or not, to complete a activity that provides eight practice opportunities for finding the area of circles and shapes that include circles or parts of circles. Two of the problems provide unique...
Lesson Planet

ExplorA-Pond: 6th Grade Area and Random Number Tables

For Teachers 6th
Sixth graders estimate surface area of a pond using a random number table.
Lesson Planet

Lesson 9-3 Practice B: Composite Figures

For Teachers 9th - 12th
In this composite figures worksheet, high schoolers solve 11 short answer problems. Students find the area of figures composed of various polygons. High schoolers find the area of each figure given a sketch of the figure with various...
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Measuring Circles

For Teachers 5th - 12th
Students discover the area of circles. In this circles lesson, students work to find the circumference and diameter of a circle. Students compare the relation of the area of a circle to a square.
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Area of a Circle Worksheet

For Students 6th
In this geometry worksheet, 6th graders identify the area of the four given circles by using the given diameters. There is a space for students to show their work.
Lesson Planet

Calculate the Area

For Students 6th
In this area of a circle worksheet, 6th graders must calculate the area of 5 circles given either the radius or diameter. Students must write the area on the line provided and a blank space is provided for students to work out the...
Lesson Planet

Whether to Water the Wheat

For Students 9th - 11th
In this area of circles worksheet, students compare the area of fields watered by pivot lines. One field has one long line, the second has 5 smaller pivot lines. Charts are included to assist students in deciding which set up makes the...