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To work out the area of the rectangular faces, you need to multiply the length by the width. You then need to multiply that answer by 3 (because there are 3 rectangular faces).
To work out the area of the triangular faces, multiply the base of the triangle by the height and divide the answer by 2 (to find the area of one triangle). You then need to multiply it by 2 again because there are 2 triangular faces.
Important: The height of a triangle is the distance from the top corner of the triangle down to the base (so that it meets the base at 90 degrees)
You then need to add the total surface area of the rectangular faces to the surface area of the triangular faces to get the total surface area of the entire prism.
(sorry for the essay :])
What else can I help you with?
How do you find the surface area of a prism with a right angled triangle as its cross section?
Sketch a net of the prism and and work out the area of each individual piece and then add them together
What is the hardest 3D shape?
The question is not clear. Hardest, as in the most rigid, is a triangular prism (or tetrahedron). Hardest, to work the geometry of, is probably an irregular blob.
What is a formula to work out the surface area of a quadrilateral?
A quadrilateral does not have a surface area because it is not a voluminous figure.
How do you work out the cross sectional area of a trapezoidal prism?
cross-sectional area = 0.5*(sum of parallel sides)*height
How do you find the base area of a rectangular prism?
To find the base area of a rectangular prism, you need to multiply the length and width of the base. The formula for the base area of a rectangular prism is base area = length x width. This calculation gives you the total surface area of the base of the prism.
How do you find the surface area of a triangular prism net?
Work out the area of each of the 5 nets and then add them together
What is the total surface area of a triangular prism that has 2 triangles and 3 rectangles?
Work out each area of the 5 faces individually and then add them together.
What is the formula to work out the surface area of a pyramid?
If it is a triangular pyramid it would be (1/2bh)4 A triangular prism is (1/2bh)5, or (base x height divided by 2)times 4
How do you find the surface area of a rectanguar prism?
Work out the surface area of its 6 faces individually and then add them together
How do you work out the volume of prism?
You will have to work the surface area of one of the ends and then multiply that with the length.
How is a triangular prismdiffrent from a triangular pyramid?
a triangular pyramid is a triangular prism but it doesn't work vise-versa. The prism needs a minimum of 1 triangle face but it can have more.A pyramid can only have one triangular face.
How do you find the surface area of a pentagonal prism?
surface area prism = 2 × area end + total area side = 2 × area end + perimeter end × length of prism The information given to you will allow you to work out the area of one pentagonal end, and the perimeter of the pentagonal end.
How do you work out the area of the prism?
The prism is a three dimensional object. 3-D objects do not just have area. They have something call surface area, which is the amount of around on the surface of the object. 3-D objects also have volume. Volume is the amount of space inside the object. You can not work out the surface area of volume of just a prism. There are many many prisms out there. Prisms have many shapes and sizes.
How do you find the surface area of a prism with a right angled triangle as its cross section?
Sketch a net of the prism and and work out the area of each individual piece and then add them together
What is the candy bar shaped as a triangular prism?
Toblerone candy will work.
How do you work out the surface area of a triangular piece of cake?
times the base and the height and halve the result. simple!
What is the surface area of a prism whose bases each have an area 16 meters squared and whose lateral surface area is 64 meters squared?
work it out
