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Since the question does not say so, you may not assume that the pentagon is regular.

One way to find the area is to select any point inside the pentagon and join it to each of the vertices. This will divide the pentagon into 5 triangles. You can then measure the sides of each triangle and thereby calculate its area. Then sum the areas of the triangles.

You could also select one side in each triangle as the base and then draw and measure the perpendicular distance to the opposite vertex. That is another way to find the area of each triangle. There are other methods, too.

To find the perimeter you will need to measure the length of each side of the pentagon and add these lengths together.

Q: How do you find the area and perimeter of a pentagon?

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The boy had to find the area and perimeter of the pentagon.

Area = 110.11 cm2

Area = 1,918,570 ft2

measure the sides

Measure the sides and add them together

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The boy had to find the area and perimeter of the pentagon.

Area = 110.11 cm2

Area = 139.36 ft2

Area = 1,548.43 ft2

Area = 1,918,570 ft2

measure the sides

A pentagon is a 2-D shape. You can't find the volume of it unless it's 3-D. The formula for the area of a pentagon has something to do with the perimeter, the number of sides, the apothem, and the number 2.

Any 5 sided polygon is a pentagon. There is no formula for it. We have formulas for area and perimeter. Perhaps that is what you are asking?

Measure the sides and add them together

Volume is Area of the Base times the Height of the Prism. To find the area of a Regular Pentagon, you use the formula (1/2)*Perimeter*Length of Apothem.

Using trigonometry and the sine rule the area of the regular 5 sided pentagon with a perimeter of 50cm works out as 172.048 square cm rounded to 3 decimal places.

The perimeter is the sum of the sides of a polygon. So, to find the perimeter of a pentagon, you need only to add up the 5 side lengths. In the event the pentagon is regular (all equal sides and angles) then you can multiply the measure of the side by 5 to get the perimeter.