At TuLyn, we have over 2000 math video clips. While our guests can view a short preview of each video clip, our members enjoy watching them at full length.

Become a member to gain access to all of our video tutorials, worksheets and word problems.

This tutorial will teach you how to find the area of a circle when given the diameter.  You will also learn how to use given information, the diameter, and figure out what the radius will be equivalent to in order to solve for the area.  You also learn to multiply decimals with various decimal places.

Area is a quantity expressing the two-dimensional size of a defined part of a surface, typically a region bounded by a closed curve. The term surface area refers to the total area of the exposed surface of a 3-dimensional solid, such as the sum of the areas of the exposed sides of a polyhedron.

Circles are simple shapes of Euclidean geometry. A circle consists of those points in a plane which are at a constant distance, called the radius, from a fixed point, called the center.

A chord of a circle is a line segment whose both endpoints lie on the circle. A diameter is a chord passing through the center. The length of a diameter is twice the radius. A diameter is the largest chord in a circle.

Circles are simple closed curves which divide the plane into an interior and an exterior. The circumference of a circle is the perimeter of the circle, and the interior of the circle is called a disk. An arc is any connected part of a circle.

A circle is a special ellipse in which the two foci are coincident. Circles are conic sections attained when a right circular cone is intersected with a plane perpendicular to the axis of the cone.

In geometry, a diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints are on the circle. The diameters are the longest chords of the circle.

How many legs in total do two chickens, and a sheep have?