The area of any simple shape, such as a circle, triangle or rectangle, can be found by taking a series of measurements from the shape and plugging them into a formula. The necessary formula varies according to the shape but works for all shapes of that type.
Measure the dimensions of the shape. For example, finding the area of a triangle requires the width of the base and the vertical height, whereas finding the area of a circle requires the length of the radius.
Using a math textbook or Internet search, obtain the correct formula for finding the area of the specific shape. Put the measurements into the appropriate formula.
Use the formula to calculate the area of the shape.
To calculate area, first determine the shape of the object. Next, apply the correct formula is needed, and substitute the values into the appropriate places. Finally, the equation should be solved to find the number that represents the area.
Full Answer >Euclid, a Greek mathematician, wrote the book "Elements, " which presented the basic principles for what is now known as Euclidian geometry. Euclid established the system of postulates and proofs still in use today in geometry. His 13-volume work remained in use in classrooms for nearly 2,000 years.
Full Answer >To divide a circle into eight equal pieces with three straight lines, first draw two diameters that partition the circle into four sections. Next, separate and rearrange the sections, and then use a third line to cut them in half. The line segments inside the circle are chords, and diameters are chords that are in the middle of a circle.
Full Answer >The lateral area of a pyramid is the total surface area of the pyramid excluding the base. The formula for the lateral area of a regular pyramid is half the slant height multiplied by the perimeter. If the pyramid is irregular, calculation of the lateral area involves more complex equations and depends on the shape of the base.
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