![]() ![]() S = side length of the extruded regular polygon. The volume of a hexagonal prism is given by:Ĭalculate the volume of a hexagonal prism with the apothem as 5 m, base length as 12 m, and height as 6 m.Īlternatively, if the apothem of a prism is not known, then the volume of any prism is calculated as follows Therefore, the apothem of the prism is 10.4 cmįor a pentagonal prism, the volume is given by the formula:įind the volume of a pentagonal prism whose apothem is 10 cm, the base length is 20 cm and height, is 16 cm.Ī hexagonal prism has a hexagon as the base or cross-section. The apothem of a triangle is the height of a triangle.įind the volume of a triangular prism whose apothem is 12 cm, the base length is 16 cm and height, is 25 cm.įind the volume of a prism whose height is 10 cm, and the cross-section is an equilateral triangle of side length 12 cm.įind the apothem of the triangular prism. The polygon’s apothem is the line connecting the polygon center to the midpoint of one of the polygon’s sides. The formula for the volume of a triangular prism is given as Volume of a triangular prismĪ triangular prism is a prism whose cross-section is a triangle. Let’s discuss the volume of different types of prisms. Where Base is the shape of a polygon that is extruded to form a prism. The volume of a Prism = Base Area × Length The general formula for the volume of a prism is given as Since we already know the formula for calculating the area of polygons, finding the volume of a prism is as easy as pie. The formula for calculating the volume of a prism depends on the cross-section or base of a prism. The volume of a prism is also measured in cubic units, i.e., cubic meters, cubic centimeters, etc. The volume of a prism is calculated by multiplying the base area and the height. To find the volume of a prism, you require the area and the height of a prism. pentagonal prism, hexagonal prism, trapezoidal prism etc. Other examples of prisms include rectangular prism. For example, a prism with a triangular cross-section is known as a triangular prism. ![]() Prisms are named after the shapes of their cross-section. By definition, a prism is a geometric solid figure with two identical ends, flat faces, and the same cross-section all along its length. In this article, you will learn how to find a prism volume by using the volume of a prism formula.īefore we get started, let’s first discuss what a prism is. The volume of a prism is the total space occupied by a prism. That’s our final answer: The volume of the given triangular prism equals 510 feet cubed.Volume of Prisms – Explanation & Examples When we multiply feet by feet by feet and when we’re discussing volume, we know that our units will be cubed. ![]() And 30 times 17 equals 510.īut we’re not finished here because we need to decide what to do with our units. Then we multiply the area of our base by the height of our prism, 17 feet. For our base, our triangle, one-half times six times 10. Let’s start plugging things into our formula. And the height of our triangular prism is 17 feet. So we see, in our case, the base of our triangle is 10 feet and the height of our triangle is six feet. It’s the distance from one base to the other.Īnd how do we go about finding the area of the base? Well, like any triangle, we multiply one-half, the base of that triangle, times the height of that triangle. And the green portion represents the height. The volume is then the area of the base multiplied by the height. The volume of a triangular prism can be found by multiplying the base times the height, where the shaded pink portion represents the base. Determine the volume of the given triangular prism.
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