Pentagonal Prism Tutorial

Pentagonal Prism Tutorial

Pentagonal Prism Definition:

The pentagonal prism is a prism having two pentagonal bases and five rectangular sides.

Pentagonal Prism Formula :

Area of Base(A) = ½ * a * 5 * s Perimeter of Base(P) = 5s Surface Area of Prism = 5as + 5sh = 5as + Ph Volume of Prism = (5/2)ash = Ah
where
a = apothem length, s = side, h = height.
Pentagonal Prism Image/Diagram
big-penta-prism
Pentagonal Prism Example :
Case 1:

Find the surface area and volume of a pentagonal prism with the given apothem length 2, side 3 and height 4.

Step 1:

Find the area of the base. Area of the base(A) = ½ * a * 5 * s = 0.5 * 2 * 5 * 3 = 15.

Step 2:

Find the perimeter of the base. Perimeter of the base(P) = 5s = 5 * 3 = 15.

Step 3:

Find the surface area of prism. Surface Area of Prism = 5as + Ph = (5 * 2 * 3) + (15 * 4) = 30 + 60 = 90.

Step 4:

Find the volume of prism. Volume of Prism = Ah = 15 * 4 = 60. The above example will clearly illustrates how to calculate the Volume, Surface Area, Perimeter of a Pentagonal Prism manually.

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