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.
The boy had to find the area and perimeter of the pentagon.
Area = 110.11 cm2
To find the area of a pentagon when you have a base height and a length, you can divide the pentagon into simpler shapes, such as triangles and rectangles. If you know the base length and the height from the base to the top vertex, you can use the formula for the area of the pentagon: Area = (Perimeter × Apothem) / 2, or apply the formula for the area of individual shapes you've divided it into. If the pentagon is regular, you can also use the formula for the area of a regular pentagon: Area = (1/2) × Perimeter × Apothem.
Area = 1,918,570 ft2
measure the sides
The boy had to find the area and perimeter of the pentagon.
Area = 110.11 cm2
To find the area of a pentagon when you have a base height and a length, you can divide the pentagon into simpler shapes, such as triangles and rectangles. If you know the base length and the height from the base to the top vertex, you can use the formula for the area of the pentagon: Area = (Perimeter × Apothem) / 2, or apply the formula for the area of individual shapes you've divided it into. If the pentagon is regular, you can also use the formula for the area of a regular pentagon: Area = (1/2) × Perimeter × Apothem.
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
To find the perimeter of a pentagon, you simply multiply the length of one side by the number of sides. Since each side of the pentagon is 25 cm and there are 5 sides, the perimeter is calculated as follows: 25 cm × 5 = 125 cm. Therefore, the perimeter of the pentagon is 125 cm.
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.