Area and Circumference of a Circle by Pinegar, Haley

State Standard

halapett — 2025-05-12 17:22:16 UTC

7.G.B.3 Know the formulas for the area and circumference of a circle and use them to solve problems. Explore the relationships between the radius, the circumference, and the area of a circle, and the number π.

Parts of a Circle

halapett — 2025-05-12 18:26:36 UTC

Diameter

halapett — 2025-05-12 18:29:58 UTC

The diameter of a circle is a line that passes through the center and meets the circumference at opposite ends. It is twice as long as the radius of the circle.

Radius

halapett — 2025-05-12 18:31:56 UTC

The radius of a circle is defined as a line segment that joins the center to the boundary of a circle. The length of the radius remains the same from the center to any point on the circumference of the circle. The radius is half the length of the diameter.

Practice Finding the Radius and Diameter!

halapett — 2025-05-12 18:36:25 UTC

How to Find the Circumference of a Circle

halapett — 2025-05-12 18:39:50 UTC

Circumference

halapett — 2025-05-12 18:51:30 UTC

The circumference of a circle is the perimeter of the circle. It is the total length of the boundary of the circle.

Area of a Circle

halapett — 2025-05-12 19:01:09 UTC

Area of a circle is the region occupied by the circle in a two-dimensional plane. It can be determined easily using a formula, A = πr², (Pi r-squared) where r is the radius of the circle. The unit of area is the square unit, such as m², cm², etc.

How to Find the Circumference and Area of a Circle Review!

halapett — 2025-05-12 19:06:15 UTC

How to Find the Area of a Circle

halapett — 2025-05-12 19:07:14 UTC

Let's Practice Finding the Circumference!

halapett — 2025-05-12 19:09:34 UTC

Lets Practice Finding the Area of a Circle!

halapett — 2025-05-12 19:12:24 UTC

Let's Practice With Some Review Questions!

halapett — 2025-05-12 19:24:35 UTC